Katerina Siniakova has won eleven Grand Slam titles in women’s doubles. She has won them with three different partners, across nine years, and she has finished five seasons as the world No. 1 — a total that puts her level with Martina Navratilova for the most year-end top rankings in doubles in WTA history.
That combination is the argument for taking her seriously as an individual rather than as half of a famous pairing. Great doubles teams are usually credited jointly, and the assumption is that the partnership produces the results. Siniakova has changed partners twice and kept winning majors, which suggests the constant is her.
Background
Siniakova was born on 10 May 1996 in Hradec Kralove, Czech Republic, where she is still based. She stands 1.74m and plays right-handed with a two-handed backhand. Her father, Dmitry Siniakov, a former boxer, became her coach and has remained in that role.
She was ranked the world’s No. 2 junior in December 2012. The following season she and Barbora Krejcikova won three junior Grand Slam doubles titles together — Roland Garros, Wimbledon and the US Open — beginning a partnership that would last a decade. When the pair won the Wimbledon ladies’ doubles in 2018, they became the first team to have won both the girls’ and the ladies’ doubles at the tournament.
She broke into the top 100 in 2014 after a semifinal run in Moscow, and won her first WTA singles title at Shenzhen in 2017, beating two top-10 opponents on the way. The doubles career that would define her was already running alongside it.
The Krejcikova Years
Siniakova partnered Krejcikova from 2013 to 2023. The pair won seven majors together and sixteen tour-level titles in all, compiling a record of 173 wins and 57 losses.
Their haul covered every Grand Slam — Roland Garros in 2018 and 2021, Wimbledon in 2018 and 2022, the Australian Open in 2022 and 2023, and the US Open in 2022. They added the WTA Finals title in 2021 and Olympic gold in Tokyo the same year.
Siniakova first reached No. 1 in doubles on 22 October 2018.
After the Partnership Ended
The obvious risk when a decade-long partnership dissolves is that the player left behind declines. Siniakova won two more majors in 2024 with two different partners — Roland Garros alongside Coco Gauff, and Wimbledon alongside Taylor Townsend — and finished the year at No. 1 again.
She also took mixed doubles gold at the Paris Olympics with Tomas Machac, and won the Wimbledon mixed doubles title the following year.
The Townsend Partnership
The team formed with Taylor Townsend in 2024 has become the strongest on tour. Together they have won three majors — Wimbledon in 2024, the Australian Open in 2025 and Roland Garros in 2026 — along with four WTA 1000 titles, and they hold a record of three wins and one loss in Grand Slam finals.
That single defeat came in the 2025 US Open final, which leaves New York as the only major the pair have not won together.
The Career Golden Slam
Siniakova has won all four majors in women’s doubles and an Olympic gold medal in the discipline, which completes a career Golden Slam — the full set of majors plus Olympic gold, achieved across a career rather than in a single season.
Her four Roland Garros doubles titles have come with three different partners, which is unusual even among the most decorated doubles players.
Playing Style
Siniakova is a net player. Her value in a doubles team comes from reach, reaction speed and volleying rather than from raw power off the ground, and she has repeatedly been the partner who converts a big hitter’s pressure into finished points.
That profile is also why she adapts across partnerships. A player whose contribution is court coverage and finishing can be paired with different styles of baseliner without the team needing to be rebuilt around her, which is a plausible explanation for a record that has survived two changes of partner.
The Singles Career
Siniakova has continued to play singles throughout, with five tour titles — Shenzhen and Bastad in 2017, Portoroz in 2022 where she beat Elena Rybakina in the final, and Bad Homburg and Nanchang in 2023.
Her best Grand Slam singles result is the fourth round at Roland Garros in 2019, a run that included a third-round win over Naomi Osaka, then the world No. 1. She reached a career-high singles ranking of No. 27 in June 2024.
Season Snapshot — as of 30 July 2026
The figures in this section change during the season. Everything above holds regardless of date.
- WTA doubles ranking: No. 1
- WTA singles ranking: No. 36
- 2026 doubles titles: 5, including Indian Wells and Roland Garros
- 2026 doubles win-loss: 32-4
- Grand Slam doubles titles: 11
- Career doubles titles: 36
- Career singles titles: 5
- Career-high singles ranking: No. 27 (June 2024)
- Year-end doubles No. 1 finishes: 5 (2018, 2021, 2022, 2024, 2025)
- Career prize money: more than $16 million
Frequently Asked Questions
How many Grand Slam titles has Katerina Siniakova won?
Eleven in women’s doubles, plus a Wimbledon mixed doubles title. Seven of the eleven came with Barbora Krejcikova, three with Taylor Townsend and one with Coco Gauff.
Has Katerina Siniakova won an Olympic gold medal?
Two. Women’s doubles gold at the Tokyo Olympics with Krejcikova, and mixed doubles gold at the Paris Olympics with Tomas Machac.
Who is Katerina Siniakova’s doubles partner?
Taylor Townsend, since 2024. Before that she partnered Barbora Krejcikova for a decade, and won Roland Garros with Coco Gauff in 2024.
What is Katerina Siniakova’s highest ranking?
World No. 1 in doubles, first reached in October 2018, and No. 27 in singles, reached in June 2024.
Does Katerina Siniakova play singles?
Yes. She has won five WTA singles titles and reached the fourth round at Roland Garros in 2019, beating the then world No. 1 on the way.
