:Mei Yamaguchi
{{short description|Japanese mixed martial artist}}
{{Infobox martial artist
| name = Mei Yamaguchi
| image =
| image_size =
| alt =
| caption =
| birth_name =
| birth_date = {{Birth date and age|1983|2|3}}
| birth_place = Tokyo, Japan
| other_names = V.V.
V Hajime
| residence =
| nationality =
| height = {{height|ft=5|in=0}}
| weight = {{convert|114|lb|kg|abbr=on}}
| weight_class = Strawweight (2007–2013, 2017–2022)
Atomweight (2014–2016, 2023–present)
| reach = {{convert|67.7|in|cm|0|abbr=on}}
| style = Karate, Shootboxing, BJJ, Wrestling
| stance =
| fighting_out_of = Tokyo, Japan
| team = RIKI GYM{{cite web|url=https://www.onefc.com/features/how-mei-yamaguchi-struggled-for-mixed-martial-arts-acceptance/|title=How Mei Yamaguchi struggled for mixed martial arts acceptance|date=October 4, 2019|work=ONE Championship}}
Wajutsu Keishukai GODS{{cite web|url=https://www.sherdog.com/news/news/World-Series-of-Fighting-Signs-Japanese-Womens-Strawweight-Emi-Fujino-62267|title=World Series of Fighting Signs Japanese Women's Strawweight Emi Fujino|date=January 17, 2014|work=Sherdog|author=Yael Grauer}}
| trainer =
| rank = Black belt in karate{{cite web|url=https://nextshark.com/mei-yamaguchi-one-championship|title=Mei Yamaguchi Uses Her Japanese Spirit To Overcome Bullying, Opponents|date=October 16, 2019|website=nextshark.com}}
Black belt in Brazilian jiu-jitsu
| years_active = 2007–present (MMA)
2009–2015 (Shoot boxing)
| mma_kowin = 2
| mma_subwin = 9
| mma_decwin = 10
| mma_koloss =
| mma_subloss =
| mma_decloss = 16
| mma_draw = 1
| mma_nc =
| kickbox_win =
| kickbox_kowin =
| kickbox_loss =
| kickbox_koloss =
| kickbox_draw =
| kickbox_nc =
| occupation =
| university = Temple University, Japan Campus
El Camino College
| spouse =
| relatives =
| students =
| club =
| school =
| url = [http://ameblo.jp/vhajime/ Official blog]
| sherdog = 21461
| footnotes =
| updated = {{Start date|2013|11|01}}
}}
{{nihongo|Mei Yamaguchi|山口 芽生|yamaguchi mei|born {{Birth date|1983|2|3}}}}, formerly known by her ring name {{nihongo|V Hajime|V一| vī hajime}}, is a Japanese female mixed martial artist and kickboxer. Her former nickname comes from the V1 armlock wrestling move.{{cite web
|url = http://number.bunshun.jp/battle/general/column/view/4654/
|title = "絶対女王"辻結花に完勝！ V一が女子格闘技の歴史を変えた日。
|access-date = 2010-08-28
|date = 2010-02-28
|publisher = Sports Graphic Number Web
|location = Japan
|language = ja
|url-status = dead
|archive-url = https://web.archive.org/web/20100304075431/http://number.bunshun.jp/battle/general/column/view/4654/
|archive-date = 2010-03-04
}}
Yamaguchi currently fights as a Super Atomweight in the Rizin Fighting Federation promotion. She has a notable victory over Yuka Tsuji and was the final Valkyrie Featherweight Champion. She has also competed in Deep Jewels and ONE Championship. She is currently ranked #5 in the ONE Championship Women's Atomweight rankings.{{Cite web|title=Rankings {{!}} ONE|url=https://www.onefc.com/rankings/|access-date=2020-11-25|website=www.onefc.com}}
On {{Start date|2011|02|05}}, Yamaguchi announced that she would begin competing as a freelance fighter and changed her ring name to V.V.{{cite web
| url = http://ameblo.jp/vhajime/entry-10790628174.html
| script-title=ja:フリー宣言と改名について。
| access-date = 2011-03-01
| date = 2010-02-05
| publisher = Official V.V Mei Blog
| location = Japan
| language = ja
}}
Early life
Yamaguchi was born in Tokyo, Japan on {{Birth date|1983|2|3}}, and grew up with a sister and a little brother.{{cite web
| url = http://gbring.com/playermeikan/vhajime.htm
| title = V一
| work = 選手名鑑・プロフィール
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2010-11-15
}}{{cite web|url=https://www.mma-japan.net/2019/05/14/exclusive-mei-yamaguchi-interview/|title= Exclusive Mei Yamaguchi Interview |date=May 14, 2019|website=mma-japan.net|author=Stewart Fulton}} While living in Los Angeles, California, she studied some of her elementary school years before returning to Japan following her mother's unexpected death.
Yamaguchi began to learn karate during her residence in the United States around the age of 7, yearning to be like Jackie Chan.{{cite web
| url = http://www.mmarising.com/interviews/2010/11/18/exclusive-interview-with-mei-v-hajime-yamaguchi/
| title = Exclusive Interview With Mei "V Hajime" Yamaguchi
| author = Sargent, Robert
| date = 2010-11-18
| work = Interviews
| publisher = MMARising.com
| location = Canada
| access-date = 2010-11-24
}} In junior high she played softball, and during college she started training in Brazilian Jiu-Jitsu. She also studied abroad in the United States during her university years: she first attended Japan Campus of Temple University before transferring to El Camino College, from where she graduated.{{cite web|url=https://alpha.japantimes.co.jp/article/interview/202304/107103/|title=Victory lies in the process of self-development|work=The Japan Times Alpha オンライン |date=April 28, 2023|language=ja |author1=Sakamoto }} After returning to Japan, she joined Butoku Kai. She currently serves as the leader of the Morishita branch.
Mixed martial arts career
=Early career=
Yamaguchi started her professional career in MMA in the lightweight tournament of Smackgirl-F 2007: The Next Cinderella Tournament 2007 First Stage on {{Start date|2007|03|11}}, where she defeated Anna Saito by submission due to a rear naked choke.{{cite web
| url = http://www.boutreview.com/data/reports05/070311smackgirl.html
| script-title=ja:(レポ＆写真) [スマック] 3.11 新宿：しなし涙の防衛。端が王座挑戦権
| author = Honjo, Koji
| date = 2006-03-14
| work = Reports
| publisher = Bout Review
| location = Japan
| language = ja
| access-date = 2010-11-24
| url = http://gbring.com/sokuho/result/result2007_03/0311_smack.htm
| title = 【スマックガール・昼の部】内藤が茂木を判定で下しメインを締める、グラップリングTは牛塚が制覇
| date = 2007-03-11
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2010-11-24
}}
Yamguchi won her next fight in Smackgirl, defeating Saori Ishioka with a kneebar, forcing Ishioka to tap in the second round in the semi-finals at Smackgirl-F 2007: The Next Cinderella Tournament 2007 2nd Stage on {{start date|2007|05|19}}.{{cite web
| url = http://www.boutreview.com/data/reports05/070519smackgirl.html
| title = (レポ＆写真) [スマック] 5.19 新宿：高橋初戴冠。後輩HIROKOが挑戦権
| author = Honjo, Koji
| date = 2007-05-21
| work = Reports
| publisher = Bout Review
| location = Japan
| language = ja
| access-date = 2010-11-24
| url = http://gbring.com/sokuho/result/result2007_05/0519_smack_01.htm
| title = 【スマックガール昼の部】V一（ヴィーはじめ）がメインで一本勝ち！ グラップリングTは小寺が優勝
| date = 2007-05-19
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2010-11-24
}}
On {{start date|2007|09|06}} at Smackgirl 2007: Queens' Hottest Summer, Yamaguchi defeated Emi Tomimatsu by split decision, winning the final of the Next Cinderella Tournament 2007 in the lightweight division.{{cite web
| url = http://www.boutreview.com/data/reports05/070906smackgirl.html
| title = (レポ＆写真) [スマック] 9.6 後楽園：辻リベンジ。端＆HIROKO女王に
| author = Ihara, Yoshinori
|author2=Honjo, Koji
| date = 2007-09-09
| work = Reports
| publisher = Bout Review
| location = Japan
| language = ja
| access-date = 2010-11-24
| url = http://gbring.com/sokuho/result/result2007_09/0906_smack.htm
| title = 【スマックガール】女王・辻結花がタバレスにKOでリベンジ！端、HIROKOが新女王に
| date = 2007-09-06
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2010-11-24
}}
In her last fight with the promotion Smackgirl and her fourth professional match, Yamaguchi was defeated via split decision by Emi Fujino on {{Start date|2007|12|26}} at Smackgirl 7th Anniversary: Starting Over.{{cite web
| url = http://www.sherdog.com/news/articles/Tsuji-Defends-Smackgirl-Lightweight-Title-10525
| title = Tsuji Defends Smackgirl Lightweight Title
| author = Loiseleur, Tony
| date = 2007-12-26
| publisher = Sherdog
| location = USA
| access-date = 2010-08-28
| url = http://www.boutreview.com/data/reports05/071226smackgirl.html
| script-title=ja:(レポ＆写真) [スマックガール] 12.26 後楽園：辻結花、3度目の防衛
| author = Honjo, Koji
|author2=Ihara, Yoshinori
| date = 2007-12-28
| work = Reports
| publisher = Bout Review
| location = Japan
| language = ja
| access-date = 2010-11-24
| url = http://gbring.com/sokuho/result/result2007_12/1226_smack.htm
| script-title=ja:【スマックガール】辻が体調不良に苦しみながらもタイトル防衛、フジメグは第1試合で秒殺勝利
| date = 2007-12-26
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2010-11-24
}}
Her next bout would be at the first event for the promotion Valkyrie, Valkyrie 01, where she lost by unanimous decision against women's MMA legend Yuka Tsuji on {{Start date|2008|11|08}}.
|url = http://www.boutreview.com/2/reports/valkyrie/081108valkyrie.html
|title = 女子新MMA大会旗揚げ。辻、勝利後に感涙
|author = Ihara, Yoshinori
|date = 2008-11-09
|publisher = Bout Review
|location = Japan
|language = ja
|access-date = 2010-11-24
|archive-date = 2010-07-15
|archive-url = https://web.archive.org/web/20100715153638/http://www.boutreview.com/2/reports/valkyrie/081108valkyrie.html
|url-status = dead
| url = http://gbring.com/sokuho/result/result2008_11/1108_gcm.htm
| script-title=ja:【ヴァルキリー】女子の金網格闘技イベント旗揚げ！メインは辻結花が勝利
| date = 2008-11-08
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2010-11-24
| url = http://www.mmarising.com/news/2008110801.html
| title = Valkyrie: "Valkyrie 1" Results
| author = Sargent, Robert
| date = 2008-11-08
| publisher = MMARising.com
| location = Canada
| access-date = 2010-11-24
}} It was just the fourth time that Tsuji had been taken to a decision.{{cite web
| url = http://www.sherdog.com/news/articles/Tsuji-Decisions-Hajime-at-Valkyrie-Premiere-Modafferi-Victorious-15082
| title = Tsuji Decisions Hajime at Valkyrie Premiere; Modafferi Victorious
| author = Loiseleur, Tony
| date = 2008-11-08
| publisher = Sherdog
| location = USA
| access-date = 2010-08-28
}}
Yamaguchi rebounded by winning her next two bouts in the inaugural Valkyrie women's featherweight tournament. The first was a unanimous decision win over Emi Fujino on {{Start date|2009|04|25}} at Valkyrie 02 in a rematch of their 2007 bout.{{cite web
| url = http://www.mmarising.com/news/2009042501.html
| title = Valkyrie: "Valkyrie 2" Results
| author = Sargent, Robert
| date = 2009-04-25
| publisher = MMARising.com
| location = Canada
| access-date = 2010-11-24
| url = http://www.boutreview.com/2/reports/valkyrie/090425valkyrie.html
| title = 辻、フェザー級王者に。挑戦者は高林×V一の勝者に
| date = 2009-05-02
| work = Reports
| publisher = Bout Review
| location = Japan
| language = ja
| access-date = 2010-11-24
| archive-date = 2010-08-09
| archive-url = https://web.archive.org/web/20100809221541/http://www.boutreview.com/2/reports/valkyrie/090425valkyrie.html
| url-status = dead
| url = http://gbring.com/sokuho/result/result2009_04/0425_gcm.htm
| script-title=ja:【ヴァルキリー】"絶対女王"辻結花がホイス・グレイシーの弟子に一本勝ち
| date = 2009-04-25
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2010-11-24
}} The second tournament bout was against Kyoko Takabayashi, whom Yamaguchi was able to defeat with a close split decision at Cage Force & Valkyrie on {{Start date|2009|07|12}}, winning the tournament in the process and earning the right to face Yuka Tsuji for Valkyrie's Featherweight championship.{{cite web
| url = http://www.sherdog.com/news/news/Hamanaka-Wins-by-DQ-in-Cage-Force-18483
| title = Hamanaka Wins by DQ in Cage Force
| author = Endow, Wesley
| date = 2009-07-12
| publisher = Sherdog
| location = USA
| access-date = 2010-08-28
| url = http://www.bloodyelbow.com/2009/7/12/946781/cage-force-valkyrie-results-v
| title = Cage Force/Valkyrie Results: 'V Hajime' Wins Tournament, Earns Rematch With Yuka Tsuji
| author = Nelson, Chris
| date = 2009-07-12
| publisher = Bloody Elbow
| location = USA
| access-date = 2010-11-24
| url = http://www.boutreview.com/2/reports/valkyrie/090712cageforce2.html
| title = V一、接戦制す。辻結花への再挑戦権獲得
| author = Kubo, Yoshi
| date = 2009-07-15
| work = Reports
| publisher = Bout Review
| location = Japan
| language = ja
| access-date = 2010-11-24
| archive-date = 2009-09-17
| archive-url = https://web.archive.org/web/20090917041443/http://www.boutreview.com/2/reports/valkyrie/090712cageforce2.html
| url-status = dead
| url = http://gbring.com/sokuho/result/result2009_07/0712_gcm.htm
| script-title=ja:【ケージフォース】ガジエフが暴走！3度の反則で浜中が勝利、秋山弟子・一慶は秒殺
| date = 2009-07-12
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2010-11-24
}}
At Valkyrie 04, in her second match against Tsuji, Yamaguchi was once again the underdog, but she managed to defeat Tsuji with a rear naked choke in only 76 seconds.{{cite web
| url = http://www.sherdog.com/news/articles/Yamaguchi-Stuns-Tsuji-at-Valkyrie-4-22591
| title = Yamaguchi Stuns Tsuji at Valkyrie 4
| author = Breen, Jordan
| date = 2010-02-11
| work = Articles
| publisher = Sherdog
| location = USA
| access-date = 2010-11-24
| url = http://www.boutreview.com/2/reports/valkyrie/100211valkyrie.html
| title = 女子総合の歴史が動いた。V一、辻結花から大金星
| author = Ihara, Yoshinori
| date = 2010-02-12
| work = Reports
| publisher = Bout Review
| location = Japan
| language = ja
| access-date = 2010-11-24
| archive-date = 2010-05-29
| archive-url = https://web.archive.org/web/20100529131230/http://www.boutreview.com/2/reports/valkyrie/100211valkyrie.html
| url-status = dead
| url = http://gbring.com/sokuho/result/result2010_02/0211_valkyrie.htm
| title = 【ヴァルキリー】時代が動いた！V一が"絶対女王"辻結花に一本勝ちして新王者に
| date = 2010-02-11
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2010-11-24
}} This was the first time that Tsuji was defeated by a fellow Japanese fighter and only the second time that she had been defeated in her MMA career.{{cite web
|url = http://www.adcombat.com/news/2010-02-17/valkyrie-04-02112010-v-hajime-shocked-yuka-tsuji-capturing-valkyrie-title
|title = VALKYRIE 04 - 02/11/2010: V Hajime Shocked Yuka Tsuji Capturing the Valkyrie Title!
|author = Hirata, Shu
|date = 2010-02-17
|publisher = ADCC News
|access-date = 2010-08-28
|archive-url = https://web.archive.org/web/20100220214052/http://www.adcombat.com/news/2010-02-17/valkyrie-04-02112010-v-hajime-shocked-yuka-tsuji-capturing-valkyrie-title
|archive-date = 2010-02-20
|url-status = dead
}} Yamaguchi became Valkyrie's Featherweight Champion in what is considered one of the biggest upsets in the history of women's mixed martial arts.{{cite web
| url = http://www.mmarising.com/articles/2010/02/11/greatest-common-multiple-valkyrie-4-results/
| title = Greatest Common Multiple "Valkyrie 4" Results
| author = Sargent, Robert
| date = 2010-02-11
| publisher = MMARising.com
| location = Canada
| access-date = 2010-08-28
}}
On {{Start date|2010|11|28}}, Yamaguchi faced Kyoko Takabayashi in a rematch of the 2009 featherweight tournament final and Yamaguchi's first defense of Valkyrie's featherweight title. Yamaguchi barely retained with a contentious majority draw in which the dissenting judge scored the fight in favor of Takabayashi at Valkyrie 08.{{cite web
| url = http://www.sherdog.com/news/news/V-Hajime-Retains-Nakai-Nabs-Valkyrie-Open-Weight-Title-28413
| title = 'V-Hajime' Retains, Nakai Nabs Valkyrie Open Weight Title
| author = Loiseleur, Tony
| date = 2010-11-28
| work = News
| publisher = Sherdog
| location = USA
| access-date = 2010-11-30
| url = http://www.mmarising.com/articles/2010/11/28/greatest-common-multiple-valkyrie-8-results/
| title = Greatest Common Multiple "Valkyrie 8" Results
| author = Sargent, Robert
| date = 2010-11-28
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2010-11-30
}}
Yamaguchi faced "Windy" Tomomi Sunaba at Pancrase Impressive Tour 3 on {{Start date|2011|04|03}}.{{cite web
| url = http://www.mmarising.com/news/2011/03/10/mei-yamaguchi-vs-tomomi-sunaba-set-for-april-3-pancrase/
| title = Mei Yamaguchi vs Tomomi Sunaba Set For April 3 Pancrase
| author = Sargent, Robert
| date = 2011-03-10
| work = News
| publisher = MMARising.com
| location = Canada
| access-date = 2011-03-10
}} She defeated Sunaba by majority decision.{{cite web
| url = http://www.mmarising.com/articles/2011/04/03/yamaguchi-edges-sunaba-in-historic-pancrase-main-event/
| title = Yamaguchi Edges Sunaba In Historic Pancrase Main Event
| author = Sargent, Robert
| date = 2011-04-03
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2011-04-03
| url = http://www.mmafighting.com/2011/04/03/mei-yamaguchi-victorious-in-pancrases-first-womens-main-event/
| title = Mei Yamaguchi Victorious in Pancrase's First Women's Main Event
| author = Herbertson, Daniel
| date = 2011-04-03
| publisher = MMAFighting.com
| location = USA
| access-date = 2011-04-03
| url = http://www.gbring.com/sokuho/result/result2011_04/0403_pancrase.htm
| title = 【パンクラス】女子初のメインは熱闘に！V.V MeiがWINDYを破りベストバウト賞を獲得
| date = 2011-04-03
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2011-04-03
}}
Yamaguchi next faced Akiko Naito at Pancrase Impressive Tour 4 on {{Start date|2011|05|03}}.{{cite web
| url = http://www.mmarising.com/news/2011/04/04/pancrase-announces-womens-bout-for-may-3rd-card/
| title = Pancrase Announces Women's Bout For May 3rd Card
| author = Sargent, Robert
| date = 2011-04-04
| work = News
| publisher = MMARising.com
| location = Canada
| access-date = 2011-04-04
| url = http://nightmareofbattle.com/?p=5901
| archive-url = https://web.archive.org/web/20110725052800/http://nightmareofbattle.com/?p=5901
| url-status = usurped
| archive-date = July 25, 2011
| title = Second Consecutive Participation! V.V Mei On May 3rd Pancrase Card
| date = 2011-04-04
| publisher = Nightmare of Battle
| access-date = 2011-04-04
}} She defeated Naito by armbar submission in the first round.{{cite web
| url = http://www.sherdog.com/news/news/Oishi-Crowned-Inoue-Retains-at-Pancrase-Impressive-Tour-4-32059
| title = Oishi Crowned, Inoue Retains at Pancrase 'Impressive Tour 4'
| author = Loiseleur, Tony
| date = 2011-05-03
| work = News
| publisher = Sherdog
| location = USA
| access-date = 2011-05-10
| url = http://www.mmarising.com/articles/2011/05/03/yamaguchi-submits-naito-at-pancrase-impressive-tour-4/
| title = Yamaguchi Submits Naito At Pancrase Impressive Tour 4
| author = Sargent, Robert
| date = 2011-05-03
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2011-05-10
| url = http://www.gbring.com/sokuho/result/result2011_05/0503_pancrase_03.htm
| title = 【パンクラス】ライト級王者は大石、井上が防衛成功！GPで新世代が躍進
| date = 2011-05-03
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2011-05-10
}}
=Jewels=
Yamaguchi faced Seo Hee Ham in a Jewels vs. Valkyrie match at Jewels 15th Ring on {{Start date|2011|07|09}}.{{cite web
| url = http://gbring.com/sokuho/news/2011_06/0606_jewels.htm
| title = 【ジュエルス】7・9ヴァルキリー女王V.V Meiが参戦！ハム・ソヒと激突
| date = 2011-06-06
| work = News
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2011-07-11
| url = http://www.mmarising.com/news/2011/06/06/three-big-fights-announced-for-jewels-15th-ring-card/
| title = Three Big Fights Announced For Jewels: "15th Ring" Card
| author = Sargent, Robert
| date = 2011-06-06
| work = News
| publisher = MMARising.com
| location = Canada
| access-date = 2011-07-11
}} She was defeated by unanimous decision.{{cite web
| url = http://gbring.com/sokuho/result/result2011_07/0709_jewels.htm
| script-title=ja:【ジュエルス】2大女王強し！辻結花が石岡沙織を、藤井惠が長野美香を撃退
| date = 2011-07-09
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2011-07-11
| url = http://www.mmarising.com/articles/2011/07/09/jewels-15th-ring-live-play-by-play-results/
| title = Jewels: "15th Ring" Live Play-By-Play & Results
| author = Sargent, Robert
| date = 2011-07-09
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2011-07-11
}}
Yamaguchi faced Mika Nagano at Jewels 17th Ring on {{Start date|2011|12|17}}.{{cite web
| url = http://www.mmarising.com/news/2011/10/27/title-fight-two-featured-bouts-added-to-jewels-17th-ring/
| title = Title Fight, Two Featured Bouts Added To Jewels: 17th Ring
| author = Sargent, Robert
| date = 2011-10-27
| work = News
| publisher = MMARising.com
| location = Canada
| access-date = 2011-10-27
}} She won the fight by split decision.{{cite web
| url = http://gbring.com/sokuho/result/result2011_12/1217_jewels.htm
| script-title=ja:【ジュエルス】浜崎が不完全燃焼の初防衛、スギロックが初代女王に
| date = 2011-12-17
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2011-12-17
| url = http://www.mmarising.com/articles/2011/12/17/jewels-17th-ring-live-play-by-play-results/
| title = Jewels: "17th Ring" Live Play-By-Play & Results
| author = Sargent, Robert
| date = 2011-12-17
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2011-12-17
}}
Yamaguchi fought outside Japan for the first time in her MMA career when she faced Katja Kankaanpää at Botnia Punishment 11 on {{Start date|2012|03|23}} in Finland.{{cite web
| url = http://www.mmarising.com/news/2012/01/27/mei-yamaguchi-vs-katja-kankaanpaa-targeted-for-march-23/
| title = Mei Yamaguchi vs Katja Kankaanpää Targeted For March 23
| author = Sargent, Robert
| date = 2012-01-27
| work = News
| publisher = MMARising.com
| location = Canada
| access-date = 2012-02-01
}} She was defeated by unanimous decision.{{cite web
| url = http://www.mmarising.com/articles/2012/03/23/katja-kankaanpaa-defeats-mei-yamaguchi-in-bp-11-headliner/
| title = Katja Kankaanpää Defeats Mei Yamaguchi In BP 11 Headliner
| author = Sargent, Robert
| date = 2012-03-23
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2012-03-23
}}
On {{Start date|2012|07|21}}, Yamaguchi faced Emi Tomimatsu in a rematch at Jewels 20th Ring.{{cite web
| url = http://www.mmarising.com/news/2012/06/27/five-fights-announced-for-jewels-20th-ring-on-july-21/
| title = Five Fights Announced For Jewels: "20th Ring" On July 21
| author = Sargent, Robert
| date = 2012-06-27
| work = News
| publisher = MMARising.com
| location = Canada
| access-date = 2012-06-28
| url = http://gbring.com/sokuho/news/2012_06/0628_jewels.htm
| title = 【ジュエルス】7・21杉山しずかが帰国第一戦、V.V.Meiと大室奈緒子も参戦
| date = 2012-06-28
| work = News
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2012-06-28
}} She defeated Tomimatsu by unanimous decision.{{cite web
| url = http://www.mmarising.com/articles/2012/07/21/mei-yamaguchi-shizuka-sugiyama-win-at-jewels-20th-ring/
| title = Mei Yamaguchi, Shizuka Sugiyama Win At Jewels: "20th Ring"
| author = Sargent, Robert
| date = 2012-07-21
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2012-07-21
| url = http://www.gbring.com/sokuho/result/result2012_07/0721_jewels.htm
| title = 【ジュエルス】女子二冠王へ向けて前進！V.V Meiが富松の連勝をストップ
| date = 2012-07-21
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2012-07-21
}}
Yamaguchi next faced Megumi Fujii at Vale Tudo Japan 2012 on {{Start date|2012|12|24}}.{{cite web
| url = http://www.mmarising.com/news/2012/12/12/megumi-fujii-to-face-mei-yamaguchi-at-vale-tudo-japan-2012/
| title = Megumi Fujii To Face Mei Yamaguchi At Vale Tudo Japan 2012
| author = Sargent, Robert
| date = 2012-12-12
| work = News
| publisher = MMARising.com
| location = Canada
| access-date = 2012-12-13
}} She was defeated by unanimous decision.{{cite web
| url = http://www.sherdog.com/news/news/Hideo-Tokoro-Hammers-Rumina-Sato-Megumi-Fujii-Wins-Possible-Final-Bout-at-VTJ-2012-48541
| title = Hideo Tokoro Hammers Rumina Sato, Megumi Fujii Wins Possible Final Bout at VTJ 2012
| author = Marchand, Dean
| date = 2012-12-24
| work = News
| publisher = Sherdog.com
| location = United States
| access-date = 2012-12-24
| url = http://www.mmarising.com/articles/2012/12/24/megumi-fujii-defeats-mei-yamaguchi-at-vale-tudo-japan-2012/
| title = Megumi Fujii Defeats Mei Yamaguchi At Vale Tudo Japan 2012
| author = Sargent, Robert
| date = 2012-12-24
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2012-12-24
}}
On {{Start date|2013|05|25}}, Yamaguchi faced Seo Ye Jung at Jewels 24th Ring.{{cite web
| url = http://www.mmarising.com/news/2013/05/18/nagano-vs-umehara-yamaguchi-vs-jung-set-for-jewels-24th-ring/
| title = Nagano vs Umehara, Yamaguchi vs Jung Set For Jewels: 24th Ring
| author = Sargent, Robert
| date = 2013-05-18
| work = News
| publisher = MMARising.com
| location = Canada
| access-date = 2013-05-20
| url = http://www.kakutoh-blog.com/jewels/2013/05/24th-ring525face-vv-mei.php
| title = 24th RING：5/25新宿FACE大会、V.V Mei、長野美香、富松恵美 参戦！
| author = Hashimoto, Kinya
| date = 2013-05-19
| publisher = Jewels Official Blog
| location = Japan
| language = ja
| access-date = 2013-05-20
}} She defeated Jung by submission due to an armbar in the first round.{{cite web
| url = http://www.mmarising.com/articles/2013/05/25/seo-hee-ham-wins-jewels-featherweight-queen-championship/
| title = Seo Hee Ham Wins Jewels Featherweight Queen Championship
|author1=Sargent, Robert |author2=Marchand, Dean |author3=Yamamoto, Go | date = 2013-05-25
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2013-05-25
| url = http://efight.jp/result-20130526_17341
| script-title=ja:【ジュエルス】韓流女子格闘家ハム・ソヒが女王の座に
| date = 2013-05-26
| work = Results
| publisher = eFight
| location = Japan
| language = ja
| access-date = 2013-05-26
}}
=PXC=
In her second fight outside Japan, Yamaguchi faced Patricia Vidonic at Pacific Xtreme Combat 40 on {{Start date|2013|10|25}} in Guam.{{cite web
| url = http://www.mmarising.com/news/2013/09/23/mei-yamaguchi-vs-patricia-vidonic-planned-for-pxc-40-in-guam/
| title = Mei Yamaguchi vs Patricia Vidonic Planned For PXC 40 In Guam
| author = Sargent, Robert
| date = 2013-09-23
| work = News
| publisher = MMARising.com
| location = Canada
| access-date = 2013-10-01
}} She was defeated by split decision.{{cite web
| url = http://www.mmarising.com/articles/2013/10/25/patricia-vidonic-defeats-mei-yamaguchi-in-pxc-40-co-feature/
| title = Patricia Vidonic Defeats Mei Yamaguchi In PXC 40 Co-Feature
| author = Sargent, Robert
| date = 2013-10-25
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2013-11-01
}}
In her sophomore bout in PXC, Yamaguchi faced Gina Iniong at PXC 43 on March 29, 2014.{{cite web|url=http://mmasucka.com/2014/03/21/final-line-pxc-43-ale-cali-vs-ernesto-montilla-serves-headliner/|title=Final line-up for PXC 43, Ale Cali vs. Ernesto Montilla serves as headliner|date=March 21, 2014|website=mmasucka.com|author=Thinesh John}} She lost the bout via split decision.{{cite web|url=https://mmasucka.com/2014/03/30/pxc-43-results-ernesto-montilla-submits-ale-cali-main-event/|title=PXC 43 Results: Ernesto Montilla submits Ale Cali in main event|date=March 30, 2014|website=mmasucka.com|author=Thinesh John}}
=Deep Jewels=
After Jewels brand was merged into Deep, Yamaguchi faced Yukiko Seki at Deep Jewels 4 on May 18, 2014.{{cite web|url=https://mmajunkie.usatoday.com/2014/05/womens-mma-report-ufc-books-three-bouts-deep-jewels-debuts-on-ippv|title=Women's MMA Report: UFC books three bouts, Deep Jewels debuts on iPPV|author=Rob Sargent|date=May 17, 2014|work=MMAjunkie.com}} She won the bout via first-round technical submission.{{cite web|url=https://mmajunkie.usatoday.com/2014/05/womens-mma-report-hashi-captures-deep-jewels-title-kowalkiewicz-improves-to-5-0|title=Women's MMA Report: Hashi captures Deep Jewels title, Kowalkiewicz improves to 5-0|date=May 29, 2014|work=MMAjunkie.com|author=Robert Sargent}}
In her sophomore bout in the promotion, Yamaguchi faced Ayaka Hamasaki at Deep - Dream Impact 2014: Omisoka Special on December 31, 2014.{{cite web|url=https://mmajunkie.usatoday.com/2014/12/womens-mma-report-jessica-penne-defeats-aisling-daly-advances-to-tuf-20-semis|title=Women's MMA Report: Jessica Penne defeats Aisling Daly, advances to 'TUF 20' semis|author=Robert Sargent|date=December 3, 2014|work=MMAjunkie.com}} She lost the bout via unanimous decision.{{cite web|url=https://mmajunkie.usatoday.com/2015/01/womens-mma-report-esparza-jedrzejczyk-set-for-ufc-185-hamasaki-shines-in-japan|title=Women's MMA Report: Esparza-Jedrzejczyk set for UFC 185, Hamasaki shines in Japan|date=January 22, 2015|work=MMAjunkie.com|author=Robert Sargent}}
She was then scheduled to face Ayaka Miura at Deep Jewels 7 on February 20, 2015. However, Miura withdrew from the bout and was replaced by Miyoko Kusaka. Yamaguchi won the bout via first-minute knockout.{{cite web|url=https://mmajunkie.usatoday.com/2015/02/womens-mma-report-reneau-shocks-andrade-four-advance-in-deep-jewels-gp|title=Women's MMA Report: Reneau shocks Andrade, four advance in Deep Jewels GP|date=February 26, 2015|work=MMAjunkie.com|author=Robert Sargent}}
==Deep Jewels Featherweight GP and championship==
In May 2015, Yamaguchi entered into a single-day, four-woman featherweight grand prix which would crown the vacant Jewels Atomweight champion.{{cite web|url=https://combatpress.com/2015/05/out-of-obscurity-global-warriors-2-deep-jewels-8-and-pancrase-267/|title=Out of Obscurity: Global Warriors 2, Deep Jewels 8 and Pancrase 267|date=May 28, 2015|publisher=combatpress.com|author=Bryan Henderson}}
She claimed the title by first defeating Mina Kurobe and then Satomi Takano.{{cite web|url=https://www.mmarising.com/articles/2015/05/31/mei-yamaguchi-wins-featherweight-title-at-deep-jewels-8/|title=Mei Yamaguchi Wins Featherweight Title At Deep Jewels 8|date=May 31, 2015|website=mmarising.com|author=Robert Sargent|author2=Go Yamamoto}}
=Return attempt to PXC=
Yamaguchi was scheduled to face Tessa Simpson at PXC 52 on March 18, 2016.{{cite web|url=https://mmajunkie.usatoday.com/2016/02/womens-mma-report-lauren-murphy-triumphs-in-pittsburgh-ruth-wins-bellator-debut|title=Women's MMA Report: Murphy triumphs in Pittsburgh, Ruth wins Bellator debut|date=February 29, 2016|work=MMAjunkie.com|author=Robert Sargent}} However, Yamaguchi withdrew from the bout citing an injury and was replaced by her latest opponent Satomi Takano.{{cite web|url=https://www.mmarising.com/news/2016/03/06/yamaguchi-out-satomi-takano-faces-tessa-simpson-at-pxc-52/|title=Yamaguchi Out, Satomi Takano Faces Tessa Simpson At PXC 52|date=March 6, 2016|website=mmarising.com|author=Robert Sargent}}
=ONE Championship and return to strawweight=
In late March 2016, it was announced that Yamaguchi had signed with the ONE Championship, and would debut against Angela Lee for the inaugural ONE Women's Atomweight Championship at ONE Championship: Ascent to Power on May 6, 2016.{{cite web|url=https://www.mmafighting.com/2016/3/31/11341496/angela-lee-faces-mei-yamaguchi-to-crown-first-ever-one-womens-champion|title=Angela Lee faces Mei Yamaguchi to crown first-ever ONE women's champion|date=March 31, 2016|publisher=mmafighting.com|author=Marc Raimondi}} She lost the bout via unanimous decision.{{cite web|url=https://mmajunkie.usatoday.com/2016/05/womens-mma-report-lee-captures-one-championship-title-evinger-retains-at-invicta-fc-17|title=Women's MMA Report: Lee captures ONE Championship title, Evinger retains at Invicta FC 17|date=May 19, 2016|work=MMAjunkie.com|author=Robert Sargent}}
==Post-title shot reign==
In her sophomore bout in the promotion, Yamaguchi faced Istela Nunes at ONE Championship: Heroes of the World on August 13, 2016.{{cite web|url=https://www.mmamania.com/2016/7/25/12264796/mei-yamaguchi-added-one-heroes-of-world-event-macau-mma|title=Mei Yamaguchi added to ONE: 'Heroes of the World' event in Macau|date=July 25, 2016|publisher=mmamania.com|author=James Goyder}} Yamaguchi lost the bout via split decision.{{cite web|url=https://news.yahoo.com/istela-nunes-takes-split-decision-victory-over-mei-141245811.html|title=Istela Nunes takes split decision victory over Mei Yamaguchi|date=August 13, 2016|work=Yahoo! News}}
==Return to contention and title rematch==
Yamaguchi then faced Jenny Huang at ONE Championship: Light of a Nation on June 30, 2017.{{cite web|url=https://www.mmanews.com/news/one-championship-light-of-a-nation-event-draws-several-new-fights|title=ONE Championship: Light of a Nation Event Draws Several New Fights|date=June 14, 2017|website=mmanews.com|author=Dana Becker}} She won the bout via second-round submission.{{cite web|url=https://cagesidepress.com/2017/06/30/one-championship-light-nation-results/|title=ONE Championship: Light of a Nation Results and Recap|date=June 30, 2017|publisher=cagesidepress.com|author=Mike McClory}}
She was then scheduled to challenge Angela Lee in a rematch for the ONE Women's Atomweight Championship at ONE Championship: Immortal Pursuit on November 24, 2017.{{cite web|url=https://mmasucka.com/2017/10/28/one-immortal-pursuit-fight-card-announced/|title=ONE: Immortal Pursuit fight card announced|date=October 28, 2017|website=mmasucka.com|author=Mike Skytte}} However, Lee was involved in a car accident, the bout was scrapped and Yamaguchi faced Gina Iniong instead.{{cite web|url=https://cagesidepress.com/2017/11/17/one-championship-immortal-pursuit-card-complete-amir-khan-faces-adrian-pang-co-main-event/|title=ONE Championship: Immortal Pursuit Card Complete, Amir Khan Faces Adrian Pang in Co-Main Event|date=November 17, 2017|publisher=cagesidepress.com|author=Jay Anderson}} She won the bout via unanimous decision.{{cite web|url=https://combatpress.com/2017/11/one-championship-immortal-pursuit-results/|title=ONE Championship Immortal Pursuit Results: Askren Stops Aoki, Retires Undefeated|date=November 24, 2017|publisher=combatpress.com|author=Rob Tatum}}
The title shot against Lee was then rebooked to take place at ONE Championship: Unstoppable Dreams on May 18, 2018.{{cite web|url=https://www.mmaweekly.com/angela-lee-and-mei-yamaguchi-to-rematch-at-one-unstoppable-dreams|title=Angela Lee and Mei Yamaguchi to Rematch at ONE: Unstoppable Dreams|date=March 15, 2018|publisher=mmaweekly.com|author=James Goyder}} Despite knocking Lee down multiple times during the bout, Yamaguchi failed to capture the belt in her second attempt, losing via unanimous decision.{{cite web|url=https://www.mmafighting.com/2018/5/18/17368622/one-championship-results-angela-lee-edges-mei-yamaguchi-in-thrilling-rematch|title=ONE Championship results: Angela Lee edges Mei Yamaguchi in thrilling rematch|date=May 18, 2018|publisher=mmafighting.com|author=Peter Carroll}}
==Winning streak==
After the title shot loss, Yamaguchi faced Jomary Torres at ONE Championship: Destiny of Champions on December 7, 2018.{{cite web|url=https://cagesidepress.com/2018/11/15/yodsanklai-iwe-fairtex-agilan-thani-among-names-confirmed-one-championship-destiny-champions/|title=Yodsanklai IWE Fairtex, Agilan Thani Among Names Confirmed for ONE Championship: Destiny of Champions|work=Cageside Press |date=November 15, 2018|publisher=cagesidepress.com}} She won the bout via unanimous decision.{{cite web|url=https://combatpress.com/2018/12/one-championship-destiny-of-champions-results-yodsanklai-demolishes-regis/|title=ONE Championship Destiny of Champions Results: Yodsanklai Demolishes Regis|date=December 7, 2018|publisher=combatpress.com|author=Rob Tatum}}
She was then scheduled to face Bo Meng at ONE Championship: Call to Greatness on February 22, 2019.{{cite web|url=https://cagesidepress.com/2019/01/29/mei-yamaguchi-jeremy-miado-among-additions-one-championship-call-greatness/|title=Mei Yamaguchi, Anthony Njokuani, Jeremy Miado Among Additions to ONE Championship: Call to Greatness|date=January 29, 2019|publisher=cagesidepress.com|author=Jay Anderson|work=Cageside Press }} However, the bout was scrapped as Meng withdrew from the bout due to an injury.
She then faced Kseniya Lachkova at ONE Championship: A New Era on March 31, 2019.{{cite web|url=https://www.bjpenn.com/mma-news/one-championship/one-a-new-era-official-fight-card-and-start-time/|title=ONE: A New Era official fight card and start time|date=March 27, 2019|publisher=bjpenn.com|author=Tom Taylor}} She won the bout via third-round submission.{{cite web|url=https://mmajunkie.usatoday.com/2019/03/one-championship-92-results-videos-kingad-akhmetov-flyweight-grand-prix-japan-demetrious-johnson-eddie-alvarez|title=ONE Championship 92 results, videos: Kingad, Akhmetov advance in flyweight grand prix, Yamaguchi gets tap|date=March 31, 2019|work=MMAjunkie.com|author=John Morgan|author2=Matt Erickson}}
Meng bout was then rebooked to take place at ONE Championship: Enter the Dragon on May 17, 2019.{{cite web|url=https://asianmma.com/dejdamrong-naito-tonon-yamaguchi-on-board-for-one-enter-the-dragon/|title= Dejdamrong on board for ONE: 'Enter the Dragon' |date=April 22, 2019|website=asianmma.com}} However Meng bowed out from the bout again due to an injury and was replaced by Laura Balin.{{cite web|url=https://apmma.net/mei-yamaguchi-gets-a-new-opponent-for-one-enter-the-dragon/|title=Mei Yamaguchi gets a new opponent for ONE: Enter the Dragon|date=May 13, 2019|website=apmma.net|author=Leon Jennings}} Yamaguchi won the bout via first-round submission.{{cite web|url=https://www.mmafighting.com/2019/5/17/18628929/one-championship-enter-the-dragon-results|title=ONE Championship: Enter the Dragon Results|date=May 17, 2019|publisher=mmafighting.com|author=Bryan Tucker}}
She then faced Jenny Huang in a rematch at ONE Championship: Century on October 13, 2019.{{cite web|url=https://mmajunkie.usatoday.com/2019/08/one-championship-100-century-lineup-two-cards-same-day|title='ONE Championship 100: Century' lineup to feature dual fight cards on same day|date=August 26, 2019|work=MMAjunkie.com|author=Nolan King}} She won the bout via unanimous decision.{{cite web|url=https://www.sherdog.com/news/news/Aung-La-N-Sang-Bibiano-Fernandes-Defend-Belts-at-One-Championship-Century-Part-2-163577|title=Aung La N Sang, Bibiano Fernandes Defend Belts at One Championship 'Century' Part 2|date=October 13, 2019|work=Sherdog|author=Tristen Critchfield}}
==Losing streak and departure from ONE==
The bout with Bo Meng was rebooked for the third time to take place at ONE Championship: King of the Jungle on February 28, 2020.{{cite web|url=https://mmajunkie.usatoday.com/2020/01/yoshihiro-akiyama-returns-one-championship-109-king-of-jungle-mma-asia|title=Yoshihiro Akiyama returns at ONE Championship 109 in February|date=January 17, 2020|work=MMAjunkie.com}} Meng the withdrew from the bout once again and was replaced by Denice Zamboanga.{{cite web|url=https://asianmma.com/denice-zamboanga-replaces-meng-bo-faces-mei-yamaguchi-at-one-king-of-the-jungle/|title=Denice Zamboanga faces Mei Yamaguchi in Singapore|date=February 13, 2020|website=asianmma.com}} Yamaguchi lost the bout via unanimous decision.{{cite web|url=https://bleacherreport.com/articles/2878390-one-championship-2020-king-of-the-jungle-results-and-highlights|title=ONE Championship 2020: 'King of the Jungle' Results and Highlights|date=February 28, 2020|work=Bleacher Report|author=Tom Sunderland}}
Yamaguchi faced Julie Mezabarba as part of an alternate bout for the Atomweight World Grand-Prix at ONE Championship: Empower on September 3, 2021.{{Cite web|last=Cruz|first=Guilherme|date=2021-08-16|title=ONE Championship's all-women's card back on for next month|url=https://www.mmafighting.com/2021/8/16/22626878/one-championships-all-womens-card-back-september-3-mma|access-date=2021-08-17|website=MMA Fighting|language=en}} She lost the bout via unanimous decision.{{Cite web|last=Anderson|first=Jay|date=2021-09-03|title=ONE: Empower Sees Yamaguchi Fall, Hirata Advance in Atomweight Grand Prix|url=https://cagesidepress.com/2021/09/03/one-empower-yamaguchi-hirata/|access-date=2021-09-03|website=Cageside Press|language=en-US}}
Yamaguchi faced Jihin Radzuan at ONE: Bad Blood on February 11, 2022, as a late notice replacement for Jenelyn Olsim.{{cite web|title=Mei Yamaguchi steps in to face Jihin Radzuan at ONE: 'Bad Blood' |url=https://asianmma.com/mei-yamaguchi-steps-in-to-face-jihin-radzuan-at-one-bad-blood/ |website=asianmma.com |access-date=5 February 2022 |date=4 February 2022}} She lost the bout via unanimous decision.{{cite web |title=【ONE】ヘビー級暫定世界王者は"とにかく明るい"マリキンがKO戴冠！ ムエタイ フライ級ハガティーがモンコルペット降す、緊急参戦の山口V.V芽生、ラズワンにまさかの判定負け |url=https://gonkaku.jp/articles/9534 |website=gonkaku.jp |access-date=12 February 2022 |date=11 February 2022}}
=Post ONE=
In order to finish her career in her native Japan, she was granted an early release from ONE and subsequently signed with Rizin Fighting Federation.{{cite AV media|url=https://www.youtube.com/watch?v=t1F-tfiNEHI|title=BROADENED HORIZIN 25: Mei Yamaguchi, Makoto Shinryu, and Claire Lopez|date=March 29, 2023|via=YouTube|author=MMA Mania}} She dropped to super atomweight division and made her promotional debut against Kanna Asakura on April 29, 2023, at Rizin Landmark 5.{{cite web|url=https://www.sherdog.com/news/news/Juntaro-Ushiku-vs-Mikuru-Asakura-Tops-Rizin-Landmark-Vol-5-Lineup-189336|title=Juntaro Ushiku vs. Mikuru Asakura Tops Rizin Landmark Vol. 5 Lineup|date=March 4, 2023|work=Sherdog|author=Tristen Critchfield}} She lost the bout via unanimous decision.{{cite web|url=https://cagesidepress.com/2023/04/28/rizin-landmark-vol-5-full-results/|title=RIZIN Landmark 5 Full Results|date=April 28, 2023|publisher=cagesidepress.com}}
In her next bout, Mei faced Sayako Fujita on December 24, 2023 at Pancrase 340, losing the bout via split decision.{{Cite web |last=格闘技情報を毎日配信！ |first=eFight 【イーファイト】 |title=【パンクラス】元ビルダー・沙弥子、レジェンドV.V Meiに接戦勝利！アトム級T決勝でSARAMIと激突 |url=https://efight.jp/result_s-20231224_1451739 |access-date=2024-02-19 |website=eFight【イーファイト】格闘技情報を毎日配信！ |date=24 December 2023 |language=ja}}
Submission grappling and shoot boxing career
Yamaguchi tried her hand in submission grappling, first in the Abu Dhabi Combat Club Japan Trial final qualifier in the under-55 kg class, where she was defeated by points by Yasuko Mogi on {{Start date|2007|04|15}}.{{cite web
| url = http://www.boutreview.com/data/reports05/070415adccj.html
| title = (レポ＆写真) 【ADCC】 4.15 北沢：杉江、岡見、植松ら世界大会へ
| access-date = 2010-08-29
| date = 2007-04-20
| publisher = Bout Review
| location = Japan
| language = ja
}} In her second and final submission grappling match, she was once again defeated by points; this time by women's MMA star Miku Matsumoto at DEEP X03 on {{Start date|2008|07|05}}.{{cite web
| url = http://www.japan-mma.com/2008/07/75-deep-x03-shinjuku-face-results.html
| title = 7/5 DEEP X03 - Shinjuku Face - RESULTS
| date = 2008-07-05
| publisher = Japan-mma.com
| access-date = 2010-08-29
}}
Yamaguchi has had a more successful run in shoot boxing. She began competing on {{Start date|2009|08|23}}, in the shoot boxing tournament Girls S-Cup 2009, where she defeated by decision South Korean female Muay thai kickboxer Su Jeong Lim and fellow mixed martial artist and karateka Madoka Okada before losing against female shoot boxing rising star Rena Kubota in the tournament final.{{cite web
| url = http://nightmareofbattle.wordpress.com/2009/08/23/august-23rd-2009-kyokushin-shootboxing-and-mma/
| title = August 23rd, 2009! Kyokushin, Shootboxing, And MMA
| date = 2009-08-23
| publisher = Nightmare Of Battle
| access-date = 2010-08-29
}} Yamaguchi won her next two bouts by decision. She participated in the shoot boxing Girls S-Cup 2010, defeating Samanta van Dole by technical submission (standing guillotine choke) and losing against Ai Takahashi by unanimous decision after an extra round.{{cite web
| url = http://www.mmarising.com/articles/2010/08/29/rena-wins-2010-girls-s-cup-hiroko-submits-furner/
| title = RENA Wins 2010 Girls S-Cup, Hiroko Submits Furner
| author = Sargent, Robert
| date = 2010-08-29
| publisher = MMARising.com
| access-date = 2010-08-30
| location = Canada
}}
On {{Start date|2011|08|19}}, Yamaguchi entered the 2011 Shoot Boxing Girls S-Cup tournament. She faced Mina in the opening round and was defeated by majority decision.{{cite web
| url = http://www.mmarising.com/articles/2011/08/19/erika-kamimura-wins-2011-shoot-boxing-girls-s-cup/
| title = Erika Kamimura Wins 2011 Shoot Boxing Girls S-Cup
| author = Sargent, Robert
| date = 2011-08-19
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2011-09-04
| url = http://www.gbring.com/sokuho/result/result2011_08/0819_sb_02.htm
| script-title=ja:【シュートボクシング】女子立ち技最強は神村エリカ！ハム・ソヒに逆転勝利
| date = 2011-08-19
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2011-09-04
}}
Yamaguchi entered the 2012 Shoot Boxing Girls S-Cup on {{Start date|2012|08|25}}. She defeated Namtarn Por Munagpetch and Lorena Klijn to advance to the final round, but lost to Rena Kubota via unanimous decision in the tournament final.{{cite web
| url = http://www.mmarising.com/articles/2012/08/25/rena-kubota-wins-2012-shoot-boxing-girls-s-cup-tournament/
| title = Rena Kubota Wins 2012 Shoot Boxing Girls S-Cup Tournament
| author = Sargent, Robert
| date = 2012-08-25
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2012-08-25
| url = http://gbring.com/sokuho/result/result2012_08/0825_sb.htm
| title = 【シュートボクシング】RENAが2度目の世界女王に！MIO、魅津希がトーナメント優勝
| date = 2012-08-25
| work = Results
| publisher = God Bless the Ring
| location = Japan
| language = ja
| access-date = 2012-08-25
}}
Yamaguchi faced Lorena Klijn in a rematch at Shoot Boxing 2013: Act.3 on {{Start date|2013|06|23}}.{{cite web
| url = http://www.mmarising.com/news/2013/06/07/mei-yamaguchi-vs-lorena-klijn-rematch-announced-for-june-23/
| title = Mei Yamaguchi vs Lorena Klijn Rematch Announced For June 23
| author = Sargent, Robert
| date = 2013-06-07
| work = News
| publisher = MMARising.com
| location = Canada
| access-date = 2013-06-18
| url = http://efight.jp/news-20130607_17757
| title = 【シュートボクシング】6・23V.V Mei、ロレーナとの再戦が決定
| date = 2013-06-07
| work = News
| publisher = eFight
| location = Japan
| language = ja
| access-date = 2013-06-18
}} She was defeated by unanimous decision.{{cite web
| url = http://www.mmarising.com/articles/2013/06/23/ai-takahashi-lorena-klijn-victorious-at-shoot-boxing-2013-act-3/
| title = Ai Takahashi, Lorena Klijn Victorious At Shoot Boxing 2013: Act 3
| author = Sargent, Robert
| date = 2013-06-23
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2013-06-24
| url = http://efight.jp/result-20130624_18808/2
| title = 【シュートボクシング】パンクラスとの対抗戦はSB全勝！サワーは格の差を見せ付ける
| date = 2013-06-24
| work = Results
| publisher = eFight
| location = Japan
| language = ja
| access-date = 2013-06-24
}}
Yamaguchi was scheduled to compete against Du Peiling at the 2013 Shoot Boxing Girls S-Cup Japan Midsummer Festival on {{Start date|2013|08|03}}.{{cite web
| url = http://www.mmarising.com/news/2013/07/30/shoot-boxing-books-mei-yamaguchi-vs-du-peiling-for-august-3/
| title = Shoot Boxing Books Mei Yamaguchi vs Du Peiling For August 3
| author = Sargent, Robert
| date = 2013-07-30
| work = News
| publisher = MMARising.com
| location = Canada
| access-date = 2013-07-30
| url = http://efight.jp/news-20130730_20452
| title = 【シュートボクシング】V.V Meiの対戦相手は台湾女子3冠王
| date = 2013-07-30
| work = News
| publisher = eFight
| location = Japan
| language = ja
| access-date = 2013-07-30
}} However, Peiling suffered an injury and Yamaguchi instead faced Chihiro Kira.{{cite web
| url = http://www.mmarising.com/news/2013/08/01/2013-shoot-boxing-girls-s-cup-53-5-quarterfinals-announced/
| title = 2013 Shoot Boxing Girls S-Cup 53.5 Quarterfinals Announced
|author1=Sargent, Robert |author2=Yamamoto, Go | date = 2013-08-01
| work = News
| publisher = MMARising.com
| location = Canada
| access-date = 2013-08-02
| url = http://efight.jp/news-20130802_20557
| script-title=ja:【シュートボクシング】魅津希の対抗馬・高橋「死に物狂いでベルトを獲りに行く」
| date = 2013-08-02
| work = News
| publisher = eFight
| location = Japan
| language = ja
| access-date = 2013-08-02
}} She defeated Kira by unanimous decision.{{cite web
| url = http://www.mmarising.com/articles/2013/08/03/mizuki-inoue-mio-tsumura-win-2013-shoot-boxing-girls-s-cups/
| title = Mizuki Inoue, Mio Tsumura Win 2013 Shoot Boxing Girls S-Cups
|author1=Sargent, Robert |author2=Marchand, Dean |author3=Yamamoto, Go | date = 2013-08-03
| work = Articles
| publisher = MMARising.com
| location = Canada
| access-date = 2013-08-04
| url = http://efight.jp/result-20130803_20569/2
| title = 【シュートボクシング】魅津希とMIOが優勝、RENAは強敵に涙の勝利
| date = 2013-08-03
| work = Results
| publisher = eFight
| location = Japan
| language = ja
| access-date = 2013-08-04
}}
Yamaguchi faced Danielle Kelly in a grappling match at ONE: X on March 26, 2022. They grappled to a draw after 12 minutes after neither could find the submission.{{Cite web |date=2022-03-26 |title=Allazov Wins Grand Prix, Rising Stars Shine At ONE X: Part I |url=https://www.onefc.com/news/allazov-wins-grand-prix-rising-stars-shine-at-one-x-part-i/ |access-date=2022-03-26 |website=ONE Championship – The Home Of Martial Arts |language=en-US}}
Yamaguchi competed in a superfight against Hakuri Ishiguro at Quintet 4 on September 10, 2023. She was submitted with a kneebar.{{cite web |title=Quintet 4 Live Results, Play-by-play, Analysis, Highlights, More |url=https://jitsmagazine.com/quintet-4-live-results-play-by-play-analysis-highlights-more/ |website=Jitsmagazine |date=10 September 2023 |access-date=10 September 2023}}
Championships and accomplishments
=Mixed martial arts=
- Jewels
- Deep Jewels Atomweight Champion (one time; former)
- Smackgirl
- Smackgirl-F The Next Cinderella Tournament 2007 Lightweight winner
- Greatest Common Multiple
- Valkyrie Featherweight Tournament winner
- Valkyrie Featherweight Champion (one time; last)
- MMAJunkie.com
- 2016 May Fight of the Month vs. Angela Lee{{Cite web|url=http://mmajunkie.com/2016/06/mmajunkies-fight-of-the-month-for-may-a-teen-sensation-shines-in-a-back-and-forth-war|title=MMAjunkie's 'Fight of the Month' for May: A teen sensation shines in a back-and-forth war|date=4 June 2016}}
=Shoot boxing=
- 2009 Shoot Boxing Girls S-Cup runner-up
- 2012 Shoot Boxing Girls S-Cup runner-up
Mixed martial arts record
{{MMArecordbox
| draws= 1
| nc=
| ko-wins= 2
| ko-losses=
| sub-wins= 9
| sub-losses=
| dec-wins= 10
| dec-losses= 16
| dq-wins=
| dq-losses=
| other-wins=
| other-losses=
}}
{{MMA record start}}
|-
|{{no2}}Loss
|align=center|{{nowrap|21–16–1}}
|Sayako Fujita
|Decision (split)
|Pancrase 340
|{{dts|2023|December|24}}
|align=center|3
|align=center|5:00
|Yokohama, Japan
|
|-
|{{no2}}Loss
|align=center|{{nowrap|21–15–1}}
|Decision (unanimous)
|{{dts|2023|April|29}}
|align=center|3
|align=center|5:00
|Tokyo, Japan
|{{small|Return to Super Atomweight.}}
|-
|{{no2}}Loss
|align=center|{{nowrap|21–14–1}}
| Jihin Radzuan
| Decision (unanimous)
| {{dts|2022|February|11}}
|align=center|3
|align=center|5:00
| Kallang, Singapore
|
|-
|{{no2}}Loss
|align=center|{{nowrap|21–13–1}}
| Julie Mezabarba
| Decision (unanimous)
| {{dts|2021|September|3}}
|align=center|3
|align=center|5:00
| Kallang, Singapore
| {{small|ONE Women's Atomweight World Grand Prix Alternate Bout.}}
|-
|{{no2}}Loss
|align=center|{{nowrap|21–12–1}}
|Decision (unanimous)
|{{dts|2020|February|28}}
|align=center|3
|align=center|5:00
|Kallang, Singapore
|
|-
|{{yes2}}Win
|align=center| 21–11–1
|Jenny Huang
|Decision (unanimous)
||{{dts|2019|October|13}}
|align=center| 3
|align=center| 5:00
|Tokyo, Japan
|
|-
|{{yes2}}Win
|align=center| 20–11–1
|Laura Balin
|Submission (Armbar)
||{{dts|2019|May|17}}
|align=center| 1
|align=center| 3:46
|Kallang, Singapore
|
|-
|{{yes2}}Win
|align=center| 19–11–1
|Kseniya Lachkova
|Submission (Armbar)
||{{dts|2019|March|31}}
|align=center| 3
|align=center| 3:18
|Tokyo, Japan
|
|-
| {{Yes2}}Win
| align=center| 18–11–1
| Jomary Torres
| Decision (unanimous)
| {{dts|2018|December|7}}
| align=center| 3
| align=center| 5:00
| Kuala Lumpur, Malaysia
| {{small|Return to Strawweight.}}
|-
| {{no2}}Loss
| align=center| 17–11–1
|Decision (unanimous)
| {{dts|2018|May|18}}
| align=center| 5
| align=center| 5:00
| Kallang, Singapore
| {{small|For the ONE Women's Atomweight Championship (115 lb).}}
|-
| {{yes2}}Win
| align=center| 17–10–1
| Gina Iniong
|Decision (unanimous)
| {{dts|2017|November|24}}
| align=center| 3
| align=center| 5:00
| Kallang, Singapore
|
|-
| {{yes2}}Win
| align=center| 16–10–1
| Jenny Huang
|Submission (rear-naked choke)
| {{dts|2017|June|30}}
| align=center| 2
| align=center| 4:00
| Yangon, Myanmar
|
|-
| {{No2}}Loss
| align=center| 15–10–1
| Istela Nunes
| Decision (split)
| {{dts|2016|August|13}}
| align=center| 3
| align=center| 5:00
| Macau, China
|
|-
| {{No2}}Loss
| align=center| 15–9–1
| Decision (unanimous)
| {{dts|2016|May|6}}
| align=center| 5
| align=center| 5:00
| Kallang, Singapore
| {{small|Return to Strawweight (115 lb). For the inaugural ONE Women's Atomweight Championship (115 lb).}}
|-
| {{yes2}}Win
| align=center| 15–8–1
| TKO (punches)
| rowspan=2 | Deep Jewels 8
| rowspan=2 | {{dts|2015|May|31}}
| align=center| 2
| align=center| 4:57
| rowspan=2 | Tokyo, Japan
| {{small|Deep Jewels Featherweight (-48 kg) Grand Prix Final; Won the Deep Jewels Featherweight Championship.}}
|-
| {{yes2}}Win
| align=center| 14–8–1
| Decision (unanimous)
| align=center| 2
| align=center| 5:00
| {{small|Deep Jewels Featherweight (-48 kg) Grand Prix Semifinal.}}
|-
| {{yes2}}Win
| align=center| 13–8–1
| Miyoko Kusaka
| KO (knee to the body)
| Deep Jewels 7
| {{dts|2015|February|21}}
| align=center| 1
| align=center| 0:44
| Tokyo, Japan
| {{small|Deep Jewels Featherweight (-48 kg) Grand Prix Quarterfinal.}}
|-
| {{no2}}Loss
| align=center| 12–8–1
| Decision (unanimous)
| Deep - Dream Impact 2014: Omisoka Special
| {{dts|2014|December|31}}
| align=center| 2
| align=center| 5:00
| Saitama, Japan
|
|-
| {{yes2}}Win
| align=center| 12–7–1
| Yukiko Seki
| Technical Submission (rear-naked choke)
| {{dts|2014|May|18}}
| align=center| 1
| align=center| 3:17
| {{small|Atomweight debut.}}
|-
| {{no2}}Loss
| align=center| 11–7–1
| Gina Iniong
| Decision (split)
| Pacific Xtreme Combat 43
| {{dts|2014|March|29}}
| align=center| 3
| align=center| 5:00
| National Capital Region, Philippines
|
|-
| {{no2}}Loss
| align=center| 11–6–1
| Patricia Vidonic
| Decision (split)
| Pacific Xtreme Combat 40
| {{dts|2013|October|25}}
| align=center| 3
| align=center| 5:00
| Mangilao, Guam, United States
|
|-
| {{yes2}}Win
| align=center| 11–5–1
| Seo Ye Jung
| Submission (armbar)
| Jewels 24th Ring
| {{dts|2013|May|25}}
| align=center| 1
| align=center| 1:55
|
|-
| {{no2}}Loss
| align=center| 10–5–1
| Decision (unanimous)
| {{dts|2012|December|24}}
| align=center| 2
| align=center| 5:00
|
|-
| {{yes2}}Win
| align=center| 10–4–1
| Emi Tomimatsu
| Decision (unanimous)
| Jewels 20th Ring
| {{dts|2012|July|21}}
| align=center| 2
| align=center| 5:00
|
|-
| {{no2}}Loss
| align=center| 9–4–1
| Decision (unanimous)
| Botnia Punishment 11: Kankaanpää vs. Yamaguchi
| {{dts|2012|March|23}}
| align=center| 3
| align=center| 5:00
| Seinäjoki, Finland
|
|-
| {{yes2}}Win
| align=center| 9–3–1
| Decision (split)
| {{dts|2011|December|17}}
| align=center| 2
| align=center| 5:00
|
|-
| {{no2}}Loss
| align=center| 8–3–1
| Decision (unanimous)
| {{dts|2011|July|09}}
| align=center| 2
| align=center| 5:00
|
|-
| {{yes2}}Win
| align=center| 8–2–1
| Akiko Naito
| Submission (armbar)
| {{dts|2011|May|03}}
| align=center| 1
| align=center| 3:52
|
|-
| {{yes2}}Win
| align=center| 7–2–1
| Tomomi Sunaba
| Decision (majority)
| {{dts|2011|April|03}}
| align=center| 2
| align=center| 5:00
|
|-
| {{draw}}Draw
| align=center| 6–2–1
| Kyoko Takabayashi
| Draw (majority)
| Valkyrie 08
| {{dts|2010|November|28}}
| align=center| 3
| align=center| 5:00
| {{small|Retained Valkyrie Featherweight Championship.}}
|-
| {{yes2}}Win
| align=center| 6–2
| Submission (rear-naked choke)
| Valkyrie 04
| {{dts|2010|February|11}}
| align=center| 1
| align=center| 1:16
| {{small|Won Valkyrie Featherweight Championship.}}
|-
| {{yes2}}Win
| align=center| 5–2
| Kyoko Takabayashi
| Decision (split)
| Cage Force & Valkyrie
| {{dts|2009|July|12}}
| align=center| 3
| align=center| 3:00
| {{small|Valkyrie Women's Featherweight Tournament final.}}
|-
| {{yes2}}Win
| align=center| 4–2
| Decision (unanimous)
| Valkyrie 02
| {{dts|2009|April|25}}
| align=center| 3
| align=center| 3:00
| {{small|Valkyrie Women's Featherweight Tournament semi-final}}
|-
| {{no2}}Loss
| align=center| 3–2
| Decision (unanimous)
| Valkyrie 01
| {{dts|2008|November|08}}
| align=center| 3
| align=center| 3:00
|
|-
| {{no2}}Loss
| align=center| 3–1
| Decision (split)
| Smackgirl 7th Anniversary: Starting Over
| {{dts|2007|December|26}}
| align=center| 2
| align=center| 5:00
|
|-
| {{yes2}}Win
| align=center| 3–0
| Emi Tomimatsu
| Decision (split)
| Smackgirl 2007: Queens' Hottest Summer
| {{dts|2007|September|06}}
| align=center| 2
| align=center| 5:00
| {{small|The Next Cinderella Tournament 2007 Lightweight final}}
|-
| {{yes2}}Win
| align=center| 2–0
| Submission (kneebar)
| Smackgirl-F 2007: The Next Cinderella 2007 2nd Stage
| {{dts|2007|May|19}}
| align=center| 2
| align=center| 1:24
| {{small|The Next Cinderella Tournament 2007 Lightweight semi-finals}}
|-
| {{yes2}}Win
| align=center| 1–0
| Anna Saito
| Submission (rear-naked choke)
| Smackgirl-F 2007: The Next Cinderella Tournament 2007 First Stage
| {{dts|2007|March|11}}
| align=center| 1
| align=center| 4:53
| {{small|The Next Cinderella Tournament 2007 Lightweight opening round}}
{{end}}
Submission grappling record
{{Fight record start|notes=y|title=Submission grappling record|record=3 Fights, 0 Wins, 2 Losses, 1 Draws}}
|-
| {{dts|2022|03|26}}
| {{draw}}Draw
| {{flagicon|USA}} Danielle Kelly
| ONE: X
| Decision
| 1
| 12:00
| 0-2-1
|
|-
| {{dts|2008|07|05}}
| {{no2}}Loss
| {{flagicon|JPN}} Miku Matsumoto
| DEEP X03
| Points (4-10)
| 2
| 4:00
| 0-2-0
|
|-
| {{dts|2007|04|15}}
| {{no2}}Loss
| {{flagicon|JPN}} Yasuko Mogi
| Abu Dhabi Combat Club Japan Trial final qualifier
| Points (2-6)
| N/A
| N/A
| 0-1-0
| Women under-55 kg class - 1st round
|-
| colspan=10 | Legend: {{legend2|#CCFFCC|Win |border=1px solid #CCFFCC}} {{legend2|#FFBBBB|Loss |border=1px solid #FFBBBB}} {{legend2|#c5d2ea|Draw/No contest |border=1px solid #c5d2ea}}
{{end}}
Shoot boxing record
{{Fight record start|title=Mei Yamaguchi shoot boxing record|record=9 Wins, 6 Losses}}
|- style="background:#fbb;"
| 2015-08-21|| Loss||align=left|{{flagicon|JPN}} MIO || Shoot Boxing Girls S-Cup 2015 Japan Tournament, Semi Final|| Tokyo, Japan || Ext.R Decision (Unanimous) || 4 || 3:00|| 9-6-0
|- style="background:#cfc;"
| 2015-08-21|| Win||align=left|{{flagicon|JPN}} Michi || Shoot Boxing Girls S-Cup 2015 Japan Tournament, Quarter Final|| Tokyo, Japan || Decision (Unanimous) || 4 || 3:00|| 9-5-0
|- bgcolor="CCFFCC"
| 2013-08-03 || Win ||align=left|{{flagicon|JPN}} Chihiro Kira || Shoot Boxing Girls S-Cup 2013 || Tokyo, Japan || Decision (unanimous) || 3 || 3:00 || 8-5-0
|- bgcolor="FFBBBB"
| 2013-06-23 || Loss ||align=left|{{flagicon|NED}} Lorena Klijn || Shoot Boxing 2013: Act.3 || Tokyo, Japan || Decision (unanimous) || 3 || 3:00 || 7-5-0
|- bgcolor="FFBBBB"
| 2012-08-25 || Loss ||align=left|{{flagicon|JPN}} Rena Kubota || Shoot Boxing Girls S-Cup 2012, final || Tokyo, Japan || Decision (unanimous) || 3 || 2:00 || 7-4-0
|- bgcolor="CCFFCC"
| 2012-08-25 || Win ||align=left|{{flagicon|NED}} Lorena Klijn || Shoot Boxing Girls S-Cup 2012, semi-finals || Tokyo, Japan || Decision (unanimous) || 4 (Ex.1) || 2:00 || 7-3-0
|-
! style=background:white colspan=9 |{{small|Klijn was penalized one point for an illegal kick in round four.}}
|-
|- bgcolor="CCFFCC"
| 2012-08-25 || Win ||align=left|{{flagicon|THA}} Namtarn Por Munagpetch || Shoot Boxing Girls S-Cup 2012, first round || Tokyo, Japan || Decision (unanimous) || 4 (Ex.1) || 2:00 || 6-3-0
|- bgcolor="FFBBBB"
| 2011-08-19 || Loss ||align=left|{{flagicon|JPN}} Mina || Shoot Boxing Girls S-Cup 2011, first round || Tokyo, Japan || Decision (majority) || 3 || 2:00 || 5-3-0
|- bgcolor="FFBBBB"
| 2010-08-29 || Loss ||align=left|{{flagicon|JPN}} Ai Takahashi || Shoot Boxing Girls S-Cup 2010, semi-finals || Tokyo, Japan || Decision (unanimous) || 4 (Ex.1) || 2:00 || 5-2-0
|- bgcolor="CCFFCC"
| 2010-08-29 || Win ||align=left|{{flagicon|NED}} Samanta van Dole || Shoot Boxing Girls S-Cup 2010, first round || Tokyo, Japan || TKO (Technical submission, standing guillotine choke) || 3 || 1:45 || 5-1-0
|-
! style=background:white colspan=9 |{{small|Van Dole was penalized one point for not making the contracted weight.}}
|-
|- bgcolor="CCFFCC"
| 2010-06-06 || Win ||align=left|{{flagicon|JPN}} Ikue Tanimura || Shoot Boxing 25th anniversary series || Tokyo, Japan || Decision (unanimous) || 3 || 2:00 || 4-1-0
|- bgcolor="CCFFCC"
| 2009-11-18 || Win ||align=left|{{flagicon|JPN}} Etsu Senchaigym || Shoot Boxing 2009: Bushido || Tokyo, Japan || Decision (unanimous) || 4 (Ex.1) || 2:00 || 3-1-0
|- bgcolor="FFBBBB"
| 2009-08-23 || Loss ||align=left|{{flagicon|JPN}} Rena Kubota || Shoot Boxing Girls Tournament 2009 final || Tokyo, Japan || Decision (unanimous) || 3 || 2:00 || 2-1-0
|- bgcolor="CCFFCC"
| 2009-08-23 || Win ||align=left|{{flagicon|JPN}} Madoka Okada || Shoot Boxing Girls Tournament 2009 semi-finals || Tokyo, Japan || Decision (unanimous) || 3 || 2:00 || 2-0-0
|- bgcolor="CCFFCC"
| 2009-08-23 || Win ||align=left|{{flagicon|South Korea}} Su Jeong Lim || Shoot Boxing Girls Tournament 2009 first round || Tokyo, Japan || Decision (unanimous) || 3 || 2:00 || 1-0-0
|-
| colspan=9 | Legend: {{legend2|#CCFFCC|Win |border=1px solid #CCFFCC}} {{legend2|#FFBBBB|Loss |border=1px solid #FFBBBB}} {{legend2|#c5d2ea|Draw/No contest |border=1px solid #c5d2ea}} {{legend2|White|Notes |border=1px solid #AAAAAA}}
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See also
References
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External links
- {{Sherdog}}
- [http://www.fightergirls.com/fighter.asp?ID=263 Profile] at Fightergirls.com
- [https://web.archive.org/web/20100826112717/http://www.shootboxing.org/rank/v1.html Profile] at shoot boxing {{in lang|ja}}
- [http://ameblo.jp/vhajime/ Official blog] {{in lang|ja}}
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{{DEFAULTSORT:Yamaguchi, Mei}}
Category:Strawweight mixed martial artists
Category:Atomweight mixed martial artists
Category:Japanese female mixed martial artists
Category:Mixed martial artists utilizing karate
Category:Mixed martial artists utilizing shootboxing
Category:Mixed martial artists utilizing wrestling
Category:Mixed martial artists utilizing Brazilian jiu-jitsu
Category:Japanese female karateka
Category:Japanese female kickboxers
Category:Female Brazilian jiu-jitsu practitioners
Category:Japanese practitioners of Brazilian jiu-jitsu
Category:People awarded a black belt in Brazilian jiu-jitsu
Category:Martial artists from Tokyo
Category:ONE Championship mixed martial artists