2018 Citi Open

{{Infobox tennis event|2018|Citi Open|

| date = July 30 – August 5

| edition = 50th (men) / 8th (women)

| surface = Hard (outdoor)
SportMaster Sport Surfaces

| location = Washington, D.C., United States

| category = ATP World Tour 500 (men)
WTA International (women)

| champms = {{flagicon|GER}} Alexander Zverev

| champws = {{flagicon|RUS}} Svetlana Kuznetsova

| champmd = {{flagicon|GBR}} Jamie Murray / {{flagicon|BRA}} Bruno Soares

| champwd = {{flagicon|CHN}} Han Xinyun / {{flagicon|CRO}} Darija Jurak

| main_name = Washington Open (tennis) {{!}} Washington Open

}}

The 2018 Washington Open (called the Citi Open for sponsorship reasons) was a tennis tournament played on outdoor hard courts. It was the 50th edition (for the men) and the 8th edition (for the women) of the Washington Open. The event was part of the ATP World Tour 500 series of the 2018 ATP World Tour, and of the WTA International tournaments of the 2018 WTA Tour. It took place at the William H.G. FitzGerald Tennis Center in Washington, D.C., United States, from July 30 to August 5, 2018.{{cite web|title=Citi Open Overview|url=http://www.atpworldtour.com/en/tournaments/washington/418/overview|website=atpworldtour.com}}

Finals

=Men's singles=

{{flagicon|GER}} Alexander Zverev defeated {{flagicon|AUS}} Alex de Minaur, 6–2, 6–4

=Women's singles=

{{flagicon|RUS}} Svetlana Kuznetsova defeated {{flagicon|CRO}} Donna Vekić, 4–6, 7–6^(9–7), 6–2

=Men's doubles=

{{flagicon|GBR}} Jamie Murray / {{flagicon|BRA}} Bruno Soares defeated {{flagicon|USA}} Mike Bryan / {{flagicon|FRA}} Édouard Roger-Vasselin, 3–6, 6–3, [10–4]

=Women's doubles=

{{flagicon|CHN}} Han Xinyun / {{flagicon|CRO}} Darija Jurak defeated {{flagicon|CHI}} Alexa Guarachi / {{flagicon|NZL}} Erin Routliffe, 6–3, 6–2

Points and prize money

= Point distribution =

class=wikitable style=font-size:90%;text-align:center
style="width:130px; background:#eaeaea;"\|Event \| style="width:80px; background:lime;"\|W \| style="width:85px; background:thistle;"\|F \| style="width:85px; background:#ff0;"\|SF \| style="width:85px; background:#ffebcd;"\|QF \| style="width:85px; background:#afeeee;"\|Round of 16 \| style="width:85px; background:#afeeee;"\|Round of 32 \| style="width:85px; background:#afeeee;"\|Round of 64 \|width=85 \|Q \|width=85 \|Q2 \|width=85 \|Q1
style="background:#f4f4f4;"\| Men's singles \|rowspan=2\|500 \|rowspan=2\|300 \|rowspan=2\|180 \|rowspan=2\|90 \|45 \|20 \|0 \|10 \|4 \|rowspan=2\|0
style="background:#f4f4f4;"\| Men's doubles \| 0 \| {{n/a}} \| {{n/a}} \| 45 \| 25
style="background:#f4f4f4;"\| Women's singles \|rowspan=2\|280 \|rowspan=2\|180 \|rowspan=2\|110 \|rowspan=2\|60 \|30 \|1 \| {{n/a}} \|18 \|12 \|1
style="background:#f4f4f4;"\| Women's doubles \| 1 \| {{n/a}} \| {{n/a}} \| {{n/a}} \| {{n/a}} \| {{n/a}}

class=wikitable style=font-size:90%;text-align:center

style="width:130px; background:#eaeaea;"|Event

| style="width:80px; background:lime;"|W

| style="width:85px; background:thistle;"|F

| style="width:85px; background:#ff0;"|SF

| style="width:85px; background:#ffebcd;"|QF

| style="width:85px; background:#afeeee;"|Round of 16

| style="width:85px; background:#afeeee;"|Round of 32

| style="width:85px; background:#afeeee;"|Round of 64

|width=85 |Q

|width=85 |Q2

|width=85 |Q1

style="background:#f4f4f4;"| Men's singles

|rowspan=2|500

|rowspan=2|300

|rowspan=2|180

|rowspan=2|90

|45

|20

|10

|rowspan=2|0

style="background:#f4f4f4;"| Men's doubles

| 0

| {{n/a}}

| 45

| 25

style="background:#f4f4f4;"| Women's singles

|rowspan=2|280

|rowspan=2|180

|rowspan=2|110

|rowspan=2|60

|30

| {{n/a}}

|18

|12

style="background:#f4f4f4;"| Women's doubles

| 1

| {{n/a}}

= Prize money =

class=wikitable style=font-size:90%;text-align:center

style="width:130px; background:#eaeaea;"|Event

| style="width:80px; background:lime;"|W

| style="width:85px; background:thistle;"|F

| style="width:85px; background:#ff0;"|SF

| style="width:85px; background:#ffebcd;"|QF

| style="width:85px; background:#afeeee;"|Round of 16

| style="width:85px; background:#afeeee;"|Round of 32

| style="width:85px; background:#afeeee;"|Round of 64¹

|width=85|Q2

|width=85|Q1

style="background:#f4f4f4;"|Men's singles

|$384,120

|$188,315

|$94,755

|$48,195

|$25,025

|$13,200

|$7,130

|$1,460

|$745

style="background:#f4f4f4;"|Men's doubles *

|$115,650

|$56,620

|$28,400

|$14,580

|$7,540

| {{n/a}}

style="background:#f4f4f4;"|Women's singles

|$43,000

|$21,400

|$11,500

|$6,200

|$3,420

|$2,220

| {{n/a}}

|$1,285

|$750

style="background:#f4f4f4;"|Women's doubles *

|$12,300

|$6,400

|$3,435

|$1,820

|$960

| {{n/a}}

_{¹ Qualifiers prize money is also the Round of 64 prize money}

_{* per team}

ATP singles main-draw entrants

=Seeds=

class="sortable wikitable"
width="75"\| Country ! width="140"\| Player ! Rank¹ ! Seed
style="background:#cfc;" \|{{flag\|GER}} \|Alexander Zverev \|3 \|1
{{flagu\|USA}} \|John Isner \|9 \|2
{{flag\|BEL}} \|David Goffin \|11 \|3
{{flag\|GBR}} \|Kyle Edmund \|16 \|4
~~{{flag\|AUS}}~~ \|~~Nick Kyrgios~~ \|18 \|5
{{flag\|FRA}} \|Lucas Pouille \|19 \|6
{{flag\|JPN}} \|Kei Nishikori \|20 \|7
{{flag\|KOR}} \|Chung Hyeon \|23 \|8
{{flag\|CAN}} \|Denis Shapovalov \|27 \|9
{{flag\|GRE}} \|Stefanos Tsitsipas \|32 \|10
{{flagu\|USA}} \|Steve Johnson \|34 \|11
{{flag\|RUS}} \|Karen Khachanov \|35 \|12
{{flagu\|USA}} \|Frances Tiafoe \|42 \|13
{{flag\|FRA}} \|Jérémy Chardy \|43 \|14
{{flag\|GER}} \|Mischa Zverev \|45 \|15
{{flag\|RUS}} \|Andrey Rublev \|46 \|16

class="sortable wikitable"

width="75"| Country

! width="140"| Player

! Rank¹

! Seed

style="background:#cfc;"

|{{flag|GER}}

|11

|16

~~{{flag|AUS}}~~

|~~Nick Kyrgios~~

|18

|19

|20

|23

|27

|32

|10

|Steve Johnson

|34

|11

|Karen Khachanov

|35

|12

|Frances Tiafoe

|42

|13

|Jérémy Chardy

|43

|14

|Mischa Zverev

|45

|15

|Andrey Rublev

|46

|16

¹ Rankings are as of July 23, 2018

=Other entrants=

The following players received wild cards into the main singles draw:

{{flagicon|RUS}} Daniil Medvedev
{{flagicon|USA}} Tommy Paul
{{flagicon|USA}} Noah Rubin
{{flagicon|USA}} Tim Smyczek
{{flagicon|SUI}} Stan Wawrinka

The following player received entry using a protected ranking:

{{flagicon|AUS}} James Duckworth

The following players received entry from the singles qualifying draw:

{{flagicon|AUS}} Alex Bolt
{{flagicon|USA}} Mitchell Krueger
{{flagicon|USA}} Thai-Son Kwiatkowski
{{flagicon|FRA}} Vincent Millot
{{flagicon|JPN}} Yosuke Watanuki
{{flagicon|USA}} Donald Young

The following player received entry as a lucky loser:

{{flagicon|AUS}} Jason Kubler

=Withdrawals=

;Before the tournament

{{flagicon|RSA}} Kevin Anderson → replaced by {{flagicon|POL}} Hubert Hurkacz
{{flagicon|CZE}} Tomáš Berdych → replaced by {{flagicon|USA}} Mackenzie McDonald
{{flagicon|IND}} Yuki Bhambri → replaced by {{flagicon|AUS}} James Duckworth
{{flagicon|UKR}} Alexandr Dolgopolov → replaced by {{flagicon|BLR}} Ilya Ivashka
{{flagicon|AUS}} Nick Kyrgios → replaced by {{flagicon|AUS}} Jason Kubler

;During the tournament

{{flagicon|GBR}} Andy Murray

=Retirements=

{{flagicon|FRA}} Vincent Millot

ATP doubles main-draw entrants

=Seeds=

class="sortable wikitable"
width="70"\| Country ! width="175"\| Player ! width="70"\| Country ! width="175"\| Player ! Rank¹ ! Seed
{{flag\|AUT}} \|Oliver Marach \|{{flag\|CRO}} \|Mate Pavić \|5 \|1
{{flag\|FIN}} \|Henri Kontinen \|{{flag\|AUS}} \|John Peers \|11 \|2
{{flag\|POL}} \|Łukasz Kubot \|{{flag\|BRA}} \|Marcelo Melo \|19 \|3
style="background:#cfc;" \|{{flag\|GBR}} \|Jamie Murray \|{{flag\|BRA}} \|Bruno Soares \|27 \|4

class="sortable wikitable"

width="70"| Country

! width="175"| Player

! width="70"| Country

! width="175"| Player

! Rank¹

! Seed

|{{flag|CRO}}

|{{flag|AUS}}

|11

|{{flag|BRA}}

|19

style="background:#cfc;"

|{{flag|GBR}}

|Jamie Murray

|{{flag|BRA}}

|Bruno Soares

|27

¹ Rankings are as of July 23, 2018

=Other entrants=

The following pairs received wildcards into the doubles main draw:

{{flagicon|USA}} James Cerretani / {{flagicon|IND}} Leander Paes
{{flagicon|USA}} Denis Kudla / {{flagicon|USA}} Frances Tiafoe

The following pair received entry from the doubles qualifying draw:

{{flagicon|IND}} Divij Sharan / {{flagicon|NZL}} Artem Sitak

=Withdrawals=

;Before the tournament

{{flagicon|AUS}} Nick Kyrgios

;During the tournament

{{flagicon|GER}} Mischa Zverev

WTA singles main-draw entrants

=Seeds=

class="wikitable"
width="70"\| Country ! width="175"\| Player ! Rank ¹ ! Seed
~~{{flag\|DEN}}~~ \|~~Caroline Wozniacki~~ \|2 \|1
{{flagu\|USA}} \|Sloane Stephens \|3 \|2
{{flag\|JPN}} \|Naomi Osaka \|17 \|3
{{flag\|RUS}} \|Ekaterina Makarova \|30 \|4
{{flag\|SRB}} \|Aleksandra Krunić \|44 \|5
{{flag\|SUI}} \|Belinda Bencic \|45 \|6
style="background:#fcc;" \|{{flag\|CRO}} \|Donna Vekić \|46 \|7
{{flag\|KAZ}} \|Yulia Putintseva \|53 \|8

class="wikitable"

width="70"| Country

! width="175"| Player

! Rank ¹

! Seed

~~{{flag|DEN}}~~

|~~Caroline Wozniacki~~

|17

|30

|44

|45

style="background:#fcc;"

|{{flag|CRO}}

|Donna Vekić

|46

|Yulia Putintseva

|53

¹ Rankings are as of July 23, 2018

=Other entrants=

The following players received wild cards into the main singles draw:

~~{{flagicon|CAN}} Bianca Andreescu~~
{{flagicon|USA}} Bethanie Mattek-Sands
{{flagicon|GBR}} Katie Swan

The following players received entry as a special exempt:

{{flagicon|CHN}} Zheng Saisai

The following players received entry from the qualifying draw:

{{flagicon|GBR}} Harriet Dart
{{flagicon|UKR}} Anhelina Kalinina
{{flagicon|USA}} Allie Kiick
{{flagicon|RUS}} Sofya Zhuk

The following players received entry as lucky losers:

{{flagicon|BEL}} Ysaline Bonaventure
{{flagicon|JPN}} Mayo Hibi

=Withdrawals=

;Before the tournament

{{flagicon|CAN}} Bianca Andreescu → replaced by {{flagicon|JPN}} Mayo Hibi
{{flagicon|KAZ}} Zarina Diyas → replaced by {{flagicon|AUS}} Olivia Rogowska
{{flagicon|BEL}} Kirsten Flipkens → replaced by {{flagicon|JPN}} Nao Hibino
{{flagicon|AUS}} Daria Gavrilova → replaced by {{flagicon|RUS}} Natalia Vikhlyantseva
{{flagicon|ITA}} Camila Giorgi → replaced by {{flagicon|HUN}} Fanny Stollár
{{flagicon|TPE}} Hsieh Su-wei → replaced by {{flagicon|CHN}} Han Xinyun
{{flagicon|ROU}} Monica Niculescu → replaced by {{flagicon|USA}} Kristie Ahn
{{flagicon|LAT}} Anastasija Sevastova → replaced by {{flagicon|GBR}} Katie Boulter
{{flagicon|CZE}} Barbora Strýcová → replaced by {{flagicon|GER}} Andrea Petkovic
{{flagicon|UKR}} Lesia Tsurenko → replaced by {{flagicon|USA}} Caroline Dolehide
{{flagicon|DEN}} Caroline Wozniacki → replaced by {{flagicon|BEL}} Ysaline Bonaventure

;During the tournament

{{flagicon|JPN}} Nao Hibino

WTA doubles main-draw entrants

=Seeds=

class="sortable wikitable"
width="70"\| Country ! width="175"\| Player ! width="70"\| Country ! width="175"\| Player ! Rank¹ ! Seed
{{flag\|TPE}} \|Chan Hao-ching \|{{flag\|CHN}} \|Yang Zhaoxuan \|44 \|1
{{flag\|JPN}} \|Shuko Aoyama \|{{flag\|CZE}} \|Renata Voráčová \|87 \|2
style="background:#cfc;" \|{{flag\|CHN}} \|Han Xinyun \|{{flag\|CRO}} \|Darija Jurak \|182 \|3
style="background:#fcc;" \|{{flag\|CHI}} \|Alexa Guarachi \|{{flag\|NZL}} \|Erin Routliffe \|211 \|4

class="sortable wikitable"

width="70"| Country

! width="175"| Player

! width="70"| Country

! width="175"| Player

! Rank¹

! Seed

|Chan Hao-ching

|{{flag|CHN}}

|Yang Zhaoxuan

|44

|Shuko Aoyama