2021 WTA Finals – Doubles

{{Tennis events|2021|WTA Finals|s

| champ = {{flagicon|CZE}} Barbora Krejčíková
{{flagicon|CZE}} Kateřina Siniaková

| runner = {{flagicon|TPE}} Hsieh Su-wei
{{flagicon|BEL}} Elise Mertens

| score = 6–3, 6–4

| draw = 8 (round robin)

| edition = 45th

| type = singles doubles

| before_year = 2019

}}

{{main article|2021 WTA Finals}}

Barbora Krejčíková and Kateřina Siniaková defeated Hsieh Su-wei and Elise Mertens in the final, 6–3, 6–4 to win the doubles tennis title at the 2021 WTA Finals.

Tímea Babos and Kristina Mladenovic were the two-time reigning champions, but failed to qualify this year.{{Cite web|date=3 November 2019|title='There was no one out there who could beat us' - Babos, Mladenovic defend WTA Finals title with defeat of Hsieh, Strycova|url=https://www.wtatennis.com/news/1485102/-there-was-no-one-out-there-who-could-beat-us-babos-mladenovic-defend-wta-finals-title-with-defeat-of-hsieh-strycova|url-status=live|access-date=2021-11-09|website=Women's Tennis Association|language=en|archive-url=https://web.archive.org/web/20191112092933/https://www.wtatennis.com/news/1485102/-there-was-no-one-out-there-who-could-beat-us-babos-mladenovic-defend-wta-finals-title-with-defeat-of-hsieh-strycova |archive-date=2019-11-12 }}

Krejčíková and Siniaková clinched the year-end no. 1 as a team with their win against Sharon Fichman and Giuliana Olmos in their first round-robin match, and Siniaková secured the individual year-end no. 1 ranking by winning the title. Hsieh was also in contention for the top ranking. Krejčíková was the only player in this edition to qualify for both the singles and doubles tournaments.{{Cite web|date=18 November 2021|title=Krejcikova, Siniakova sweep past Hsieh, Mertens to win WTA Finals doubles title|url=https://www.wtatennis.com/news/2356192/krejcikova-siniakova-sweep-past-hsieh-mertens-to-win-wta-finals-doubles-title|url-status=live|access-date=2021-11-18|website=Women's Tennis Association|language=en|archive-url=https://web.archive.org/web/20211118020344/https://www.wtatennis.com/news/2356192/krejcikova-siniakova-sweep-past-hsieh-mertens-to-win-wta-finals-doubles-title |archive-date=2021-11-18 }}

Seeds

{{columns-list|colwidth=30em|

  1. {{flagicon|CZE}} Barbora Krejčíková / {{flagicon|CZE}} Kateřina Siniaková (champions)
  2. {{flagicon|JPN}} Shuko Aoyama / {{flagicon|JPN}} Ena Shibahara (semifinals)
  3. {{flagicon|TPE}} Hsieh Su-wei / {{flagicon|BEL}} Elise Mertens (final)
  4. {{flagicon|USA}} Nicole Melichar-Martinez / {{flagicon|NED}} Demi Schuurs (semifinals)
  5. {{flagicon|AUS}} Samantha Stosur / {{flagicon|CHN}} Zhang Shuai (round robin)
  6. {{flagicon|CHI}} Alexa Guarachi / {{flagicon|USA}} Desirae Krawczyk (round robin)
  7. {{flagicon|CRO}} Darija Jurak / {{flagicon|SLO}} Andreja Klepač (round robin)
  8. {{flagicon|CAN}} Sharon Fichman / {{flagicon|MEX}} Giuliana Olmos (round robin)

}}

Alternates

{{columns-list|colwidth=30em|

  1. {{flagicon|UKR}} Nadiia Kichenok / {{flagicon|ROU}} Raluca Olaru (Did not play)
  2. {{flagicon|CZE}} Marie Bouzková / {{flagicon|CZE}} Lucie Hradecká (Did not play)

}}

Draw

{{Draw key}}

=Finals=

{{4TeamBracket-Tennis3

| RD1=Semifinals

| RD2=Final

| team-width=175

| RD1-seed1=1

| RD1-team1={{flagicon|CZE}} Barbora Krejčíková
{{flagicon|CZE}} Kateřina Siniaková

| RD1-score1-1=3

| RD1-score1-2=6

| RD1-score1-3=[10]

| RD1-seed2=4

| RD1-team2={{flagicon|USA}} Nicole Melichar-Martinez
{{flagicon|NED}} Demi Schuurs

| RD1-score2-1=6

| RD1-score2-2=3

| RD1-score2-3=[6]

| RD1-seed3=2

| RD1-team3={{flagicon|JPN}} Shuko Aoyama
{{flagicon|JPN}} Ena Shibahara

| RD1-score3-1=2

| RD1-score3-2=2

| RD1-score3-3=

| RD1-seed4=3

| RD1-team4={{flagicon|TPE}} Hsieh Su-wei
{{flagicon|BEL}} Elise Mertens

| RD1-score4-1=6

| RD1-score4-2=6

| RD1-score4-3=

| RD2-seed1=1

| RD2-team1={{flagicon|CZE}} Barbora Krejčíková
{{flagicon|CZE}} Kateřina Siniaková

| RD2-score1-1=6

| RD2-score1-2=6

| RD2-score1-3=

| RD2-seed2=3

| RD2-team2={{flagicon|TPE}} Hsieh Su-wei
{{flagicon|BEL}} Elise Mertens

| RD2-score2-1=3

| RD2-score2-2=4

| RD2-score2-3=

}}

=Group El Tajín=

{{4TeamRR-TennisWide

| title-1=

|title-2=RR W–L

|title-3=Set W–L

|title-4=Game W–L

|title-5=Standings

| seed-1=1

| team-1-abbrev={{nowrap|{{flagicon|CZE}} Krejčíková
{{flagicon|CZE}} Siniaková}}

| team-1={{nowrap|{{flagicon|CZE}} Barbora Krejčíková
{{flagicon|CZE}} Kateřina Siniaková}}

| match-w/l-1=3–0

| set-w/l-1={{twlp|W=6|L=1|dec=0}}

| game-w/l-1={{twlp|W=37|L=22|dec=0}}

| standings-1=1

| seed-2=3

| team-2-abbrev={{nowrap|{{flagicon|TPE}} Hsieh
{{flagicon|BEL}} Mertens}}

| team-2={{nowrap|{{flagicon|TPE}} Hsieh Su-wei
{{flagicon|BEL}} Elise Mertens}}

| match-w/l-2=2–1

| set-w/l-2={{twlp|W=4|L=2|dec=0}}

| game-w/l-2={{twlp|W=30|L=30|dec=0}}

| standings-2=2

| seed-3=6

| team-3-abbrev={{nowrap|{{flagicon|CHI}} Guarachi
{{flagicon|USA}} Krawczyk}}

| team-3={{nowrap|{{flagicon|CHI}} Alexa Guarachi
{{flagicon|USA}} Desirae Krawczyk}}

| match-w/l-3=1–2

| set-w/l-3={{twlp|W=3|L=5|dec=0}}

| game-w/l-3={{twlp|W=28|L=35|dec=0}}

| standings-3=3

| seed-4=8

| team-4-abbrev={{nowrap|{{flagicon|CAN}} Fichman
{{flagicon|MEX}} Olmos}}

| team-4={{nowrap|{{flagicon|CAN}} Sharon Fichman
{{flagicon|MEX}} Giuliana Olmos}}

| match-w/l-4=0–3

| set-w/l-4={{twlp|W=1|L=6|dec=0}}

| game-w/l-4={{twlp|W=24|L=32|dec=0}}

| standings-4=4

|color-row-1= |1v2=6–3, 6–1 |1v3=5–7, 7–6(7–3), [10–7] |1v4=6–4, 6–1

|color-row-2= |2v1=3–6, 1–6 |2v3=7–6(7–3), 6–2 |2v4=6–4, 7–6(7–3)

|color-row-3= |3v1=7–5, 6–7(3–7), [7–10] |3v2=6–7(3–7), 2–6 |3v4=0–6, 6–3, [11–9]

|color-row-4= |4v1=4–6, 1–6 |4v2=4–6, 6–7(3–7)|4v3=6–0, 3–6, [9–11]

}}

=Group Tenochtitlán=

{{4TeamRR-TennisWide

| title-1=

|title-2=RR W–L

|title-3=Set W–L

|title-4=Game W–L

|title-5=Standings

| seed-1=2

| team-1-abbrev={{nowrap|{{flagicon|JPN}} Aoyama
{{flagicon|JPN}} Shibahara}}

| team-1={{nowrap|{{flagicon|JPN}} Shuko Aoyama
{{flagicon|JPN}} Ena Shibahara}}

| match-w/l-1=2–1

| set-w/l-1={{twlp|W=5|L=2|dec=0}}

| game-w/l-1={{twlp|W=34|L=25|dec=0}}

| standings-1=1

| seed-2=4

| team-2-abbrev={{nowrap|{{flagicon|USA}} Melichar-Martinez
{{flagicon|NED}} Schuurs}}

| team-2={{nowrap|{{flagicon|USA}} Nicole Melichar-Martinez
{{flagicon|NED}} Demi Schuurs}}

| match-w/l-2=2–1

| set-w/l-2={{twlp|W=4|L=3|dec=0}}

| game-w/l-2={{twlp|W=32|L=27|dec=0}}

| standings-2=2

| seed-3=5

| team-3-abbrev={{nowrap|{{flagicon|AUS}} Stosur
{{flagicon|CHN}} Zhang}}

| team-3={{nowrap|{{flagicon|AUS}} Samantha Stosur
{{flagicon|CHN}} Zhang Shuai}}

| match-w/l-3=1–2

| set-w/l-3={{twlp|W=3|L=5|dec=0}}

| game-w/l-3={{twlp|W=28|L=35|dec=0}}

| standings-3=4

| seed-4=7

| team-4-abbrev={{nowrap|{{flagicon|CRO}} Jurak
{{flagicon|SLO}} Klepač}}

| team-4={{nowrap|{{flagicon|CRO}} Darija Jurak
{{flagicon|SLO}} Andreja Klepač}}

| match-w/l-4=1–2

| set-w/l-4={{twlp|W=3|L=5|dec=0}}

| game-w/l-4={{twlp|W=28|L=35|dec=0}}

| standings-4=3

|color-row-1= |1v2=6–4, 7–6(7–5) |1v3=6–4, 3–6, [7–10] |1v4=6–0, 6–4

|color-row-2= |2v1=4–6, 6–7(5–7) |2v3=6–2, 6–2 |2v4=6–4, 3–6, [10–2]

|color-row-3= |3v1=4–6, 6–3, [10–7] |3v2=2–6, 2–6 |3v4=7–6(12–10), 6–7(4–7), [5–10]

|color-row-4= |4v1=0–6, 4–6 |4v2=4–6, 6–3, [2–10] |4v3=6–7(10–12), 7–6(7–4), [10–5]

}}

Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-player ties, head-to-head records; 4. in three-player ties, (a) percentage of sets won (head-to-head records if two players remain tied), then (b) percentage of games won (head-to-head records if two players remain tied), then (c) WTA rankings.

References

{{reflist}}