The US Open women's quarterfinals deliver a tantalizing mix of redemption stories and championship pedigree as the year's final Grand Slam reaches its crucial stages. Defending champion Aryna Sabalenka continues her relentless march through the draw without dropping a set, but faces former Wimbledon champion Marketa Vondrousova who has proven her giant-killing credentials. Meanwhile, Naomi Osaka's stunning upset of Coco Gauff signals the four-time major winner's return to elite form, Jessica Pegula seeks to go one better than last year's runner-up finish, and Iga Swiatek prepares for a Wimbledon final rematch that promises fireworks on the hard courts of Flushing Meadows.
Sabalenka vs. Vondrousova
World No. 1 Aryna Sabalenka has been in imperious form through four rounds, demolishing Cristina Bucsa 6-1, 6-4 in just 73 minutes to secure her spot in the last eight. The Belarusian hasn't dropped a set en route to the quarterfinals, maintaining a remarkable 95% hold rate on her service games (38 of 40) - the highest percentage in the women's field. Her dominance extends beyond New York: Sabalenka has now reached the quarterfinals or better in 12 consecutive Grand Slam appearances, the longest streak by any woman since Serena Williams' run of 16 straight from 2000 to 2005.
Marketa Vondrousova arrives as the dangerous unseeded floater after stunning ninth seed Elena Rybakina 6-4, 5-7, 6-2 in their fourth-round clash. The 2023 Wimbledon champion showcased her resilience in the late-night Arthur Ashe Stadium showdown, firing 13 aces including three crucial ones in the final game. The Czech has been particularly impressive against top-tier opposition - her victories over Rybakina and seventh seed Jasmine Paolini make her the first unseeded player to claim multiple WTA top 10 wins en route to a Grand Slam quarterfinal since Garbine Muguruza reached the 2020 Australian Open final. The victory over Rybakina is even more impressive, knowing how great form was displayed by the Kazakh this summer. She entered three consecutive semifinals before US Open and approached the match against the Czech as a favorite after demolishing Emma Raducanu in hit match of round three. She is also topping the leaderboard of best serving players in WTA field, but this occured not enough to overcome the resilient Vondrousova who seems to be the potent force once again after overcoming the injury struggles which naggled her in last couple of months.
The head-to-head difference is marginal with Sabalenka leading by 5-4, with the Belarusian winning their most recent encounter at Cincinnati just weeks ago by 7-5 6-1. However, Vondrousova's variety and court craft could disrupt Sabalenka's power game. The world No. 1 hasn't faced a break point in her last match against Bucsa, winning all of the 8 pressure points on serve and has been broken just twice in 40 service games this fortnight. For Vondrousova to spring an upset, she'll need to find ways to neutralize Sabalenka's devastating first serve or count on the worse day of the world ranking leader. However, Vondrousova wins more return games (42.5% vs 38.9% on hard courts this season and as much as 39.1% to 27.5% in US Open so far), being als on the front foot with winning 10% more first return points last week than her favorized opponent.
Swiatek vs. Anisimova
Second seed Iga Swiatek continues her dominant run of form with a ruthless 6-3, 6-1 demolition of 13th seed Ekaterina Alexandrova in just 82 minutes to reach her third consecutive US Open quarterfinal. The Polish star, who joined Aryna Sabalenka as the only women to reach all four Grand Slam quarterfinals in 2025, has been in impressive form after recovering from a 5-1 deficit in first set against Anna Kalinskaya in the third round. Swiatek fired 23 winners against just 11 unforced errors while converting 4 of 7 break points against Alexandrova, who was considered as a threat before that match. The Russian is in a very consistent form, being 10th in live WTA Race for now, and gave no chances to her lower ranked opponents in first three round, dropping just one game in her previous match against Laura Siegemund.
Amanda Anisimova delivered even more lopsided victory of the fourth round, crushing 18th seed Beatriz Haddad Maia 6-0, 6-3 with a stunningly quick 27-minute opening set that saw the Brazilian accumulate 4 double faults and 8 unforced errors. The eighth seed, who reached the Wimbledon final just two months ago where she fell to Swiatek 6-0, 6-0, won an impressive 81% of her service points in the first set and maintained her dominance throughout. This sets up a blockbuster rematch of that Wimbledon final, with Anisimova looking for revenge after the historic double-bagel defeat - only the second time in Grand Slam history a final has ended with that scoreline. It's also the only one projected quarterfinal match-up from the draw which materialized in women's field. Swiatek's all-season performance on hard courts is obviously superior over Anisimova, however both managed to clinch one WTA 1000 title in 2025. The comparison of performance in US Open itself shows the chances for Anisimova, who looks more efficient on serve, although Swiatek records excellent 66.4% of winning second return points and converts 52.6% of breakpoints created, which is 13% better conversion rate than Anisimova's.
Osaka vs. Muchova
Naomi Osaka's remarkable resurgence continued with a commanding 6-3, 6-2 victory over third seed Coco Gauff in a match which was promised to be the hit clash of the whole tournament so far. It's marking her first Grand Slam quarterfinal since winning the 2021 Australian Open. The 23rd seed was untouchable for the 2023 US Open champion, showing that the lethality of her serve which showed some glimpses earlier in the season, is finally translating into unbearable weapon. She was imperious on serve, winning 32 of 38 service points (84%) and never facing a break point while converting all four of her break chances.Moreover, Osaka has faced no pressure points on serve as well, which is an astonishing achievement on that level. She has also produced "just" 9 pressure points on Gauff's serve but was ruthless with winning 8 of that, which settled the course of that match. Osaka has history on her side - she has won the title in all four previous instances when reaching a major quarterfinal, all coming on hard courts. The four-time Grand Slam champion appears to be rediscovering the form that made her the sport's dominant force before her maternity break.
Karolina Muchova extended her remarkable US Open consistency, reaching the quarterfinals after defeating 27th seed Marta Kostyuk 6-3, 6-7(0), 6-3 in another three-set marathon. The 11th seed has now won three-setters in four straight rounds at Flushing Meadows, becoming just the fourth woman in the Open era to achieve this feat. The 2023 French Open runner-up and two-time US Open semifinalist trails by 2-3 in H2H record against Osaka, but having defeated her in last year's second round at Flushing Meadows. With Muchova seeking her third consecutive US Open semifinal and Osaka chasing her fifth major title, this quarterfinal promises to be a fascinating tactical battle between power and finesse.
Pegula vs. Krejcikova
Jessica Pegula has quietly assembled one of the most dominant runs in recent US Open history, losing just 17 games through four rounds - her fewest en route to any of her eight major quarterfinal appearances. The fourth seed needed just 54 minutes to dispatch fellow American Ann Li 6-1, 6-2, breaking her opponent all four times she served in a clinical 25-minute opening set. Pegula's form represents a dramatic turnaround from her pre-tournament struggles, having lost four of six matches before arriving in New York. The 4th seed recovered from this slump of form right on time, being on a good path to another deep run at Flushing Meadows, following her road into final last year. Potential victory over Barbora Krejcikova could set-up the revenge against Sabalenka for last year's straightforward defeat in the final, this time one stage earlier.
The Czech's path to the quarterfinals has been far more arduous but equally impressive. The two-time Grand Slam champion survived one of the matches of the tournament, saving eight match points (!) against Taylor Townsend in a 1-6, 7-6 (15-13), 6-3 thriller that featured a 98-minute second set where the American wasted plenty of chances, especially while leading 6-3 in a tiebreak. The 13th game of this set alone lasted 25 minutes, with Krejcikova saving seven match points before finally converting her fourth set point. Combined with her 2.5-hour battle against Emma Navarro in the third round, the Czech has spent over six hours on court in her last two matches - triple Pegula's court time.
Krejcikova leads their head-to-head 2-1, including a straight-sets victory at last year's WTA Finals in Riyadh. However, Pegula's sole victory came at a Grand Slam - the 2023 Australian Open round of 16. The contrast in their tournament experiences couldn't be starker: Pegula has been ruthlessly efficient, winning 73% of her first serves and converting 6 of 9 break points against Li. Krejcikova has shown championship mettle but arrives battle-weary, having been pushed to three sets in consecutive matches. With Pegula's seven straight wins coming in straight sets and the partisan New York crowd firmly behind her, fatigue could be the deciding factor in this quarterfinal clash. Pegula dominates her opponent in the stats visualization for both the whole season on hard courts and the US Open itself. However, Krejcikova has barely played this year due to the injury struggles, and Pegula's draw in this tournament was much more formidable. The last standing American has faced no player ranked in top 50 so far, being a sure favorite ahead all of her matches with the highest odd of 1.24.
