Katerina Siniakova and Taylor Townsend have claimed the women's doubles championship at the US Open, securing a historic career Grand Slam as a partnership. The top-seeded pair defeated American wildcards Ashlyn Krueger and Robin Montgomery 5-7, 6-0, 6-2 at Arthur Ashe Stadium on Friday, completing their sweep of all four major championships as a team.
The victory at Flushing Meadows represents the final piece of their Grand Slam collection. Siniakova and Townsend previously won Wimbledon in 2024, the Australian Open in 2025, and the French Open earlier this year, establishing themselves as one of the sport's most dominant doubles partnerships in recent seasons.
For Siniakova, the Czech player's 12th Grand Slam doubles title overall marks another milestone in her decorated career. She has now become the first player ever to complete the career Grand Slam with two different partners—she previously achieved this feat alongside fellow Czech Barbora Krejcikova. Townsend, the American competitor who is also 30 years old, secured her first US Open doubles title with this triumph, having reached the final the previous year with Siniakova only to fall to Gabriela Dabrowski and Erin Routliffe.
The match itself unfolded in dramatic fashion. Siniakova and Townsend had advanced through the tournament without dropping a set until the final, where they faced an early setback. In the opening set, Siniakova's service struggles—including three double faults in the final game—allowed Krueger and Montgomery to claim the first frame 7-5.
The second set proved decisive in shifting momentum. After the opening game, Siniakova and Townsend won 23 of the next 27 points, dominating play to level the match at one set apiece. They carried this momentum into the third set, breaking early and consolidating their advantage to reach 3-1 before closing out the match without further difficulty.
Krueger and Montgomery, who entered the final as wildcards, brought youth and determination to the court. According to the official US Open report, the American pair were the 2021 girls' doubles champions, making their appearance in the final a significant achievement in their developing careers.
Siniakova and Townsend's path to the final demonstrated their consistency throughout the tournament. In the semifinals, they defeated the No. 8 seeds Elise Mertens and Diana Shnaider 6-0, 7-6(8), showcasing their ability to handle pressure in tight contests.
What does this achievement mean for Siniakova's legacy?
Siniakova now stands among an exclusive group in tennis history. She is one of only eight women to have won at least 12 Grand Slam doubles titles during the Open era, placing her among the sport's all-time greats in doubles competition.
Looking ahead to the remainder of the season, Siniakova has an opportunity to add another historic accomplishment to her resume. Should she finish 2026 as the world number one in doubles, it will represent her sixth year-end top ranking, which would surpass Martina Navratilova's record for the most year-end number-one finishes in WTA history.
Key Facts
- Siniakova and Townsend won all four Grand Slam doubles titles as a partnership: Wimbledon 2024, Australian Open 2025, French Open 2026, and US Open 2026
- Siniakova is the first player to complete the career Grand Slam with two different partners, having previously achieved it with Barbora Krejcikova
- The pair did not drop a set before the final and recovered from losing the opening set to win 5-7, 6-0, 6-2
- Siniakova's 12th Grand Slam doubles title places her among only eight women in the Open era with at least 12 major doubles championships
- Siniakova could surpass Martina Navratilova's record of five year-end number-one rankings if she finishes 2026 as the world's top-ranked doubles player
