Hard-court form over a full year tends to be the most reliable predictor available heading into the US Open swing, precisely because the surface rewards the repeatable, low-variance tennis that separates genuine contenders from streaky ones.
Looking at win rates over the last 52 weeks on the WTA side produces a picture that both confirms some assumptions about the current state of the women’s game and overturns a few others.
WTA Hard Court Hierarchy
What the Numbers Reveal
Aryna Sabalenka’s 90.7% sits alone at the top, and the manner of it matters as much as the number itself. 39 wins against just four losses is close to statistical dominance, and it lines up with everything else her season has produced. She is a player whose flat, first-strike hard-court game has always translated more naturally to quick courts than to clay or even grass.
Elena Rybakina’s 82.5% sits a clear tier below that but still comfortably ahead of the rest of the WTA pack, built on the highest match volume of anyone in the entire group at 57 matches. That combination, high volume and a win rate still above 82%, is arguably more impressive than a smaller, cleaner sample would be, because it reflects sustained level across an entire season rather than a hot but short stretch.
The most striking detail in the data sits immediately below those two.
Victoria Mboko’s 75.0% places her ahead of Jessica Pegula, Karolina Muchova, Coco Gauff, and Naomi Osaka. This group includes multiple Grand Slam champions and finalists with vastly more experience at the top of the sport. Mboko’s number comes on a smaller sample, 44 matches, but a three-in-four win rate at this stage of a breakout season is not a fluke of a soft schedule.
Pegula’s 74.0% and Muchova’s 73.8% sit essentially level with each other, and both numbers reflect players whose broader 2026 seasons have been defined by consistency rather than spectacular peaks. Pegula in particular has built one of the most durable seasons on the WTA Tour without a signature career-defining result to point to, and a hard-court win rate this high, on a heavy 50-match load, is exactly the kind of statistic that explains why she keeps reaching the second week of majors even when her form doesn’t generate headlines.
Gauff’s 73.3% is a similarly heavy-volume number 45 matches) and reflects a player whose serve improvements are starting to show up in results on the surface, where her return game alone previously wasn’t enough to close out the biggest matches.
Osaka’s 73.1% is the outlier worth flagging specifically because of how it was built. Her sample of 26 matches is by far the smallest of anyone in the group, a direct consequence of the injuries and extended absences that have defined her comeback since returning to the WTA Tour. A win rate above 73% on a curtailed schedule suggests that when she has actually been healthy enough to compete, her level on hard courts, the surface where all 4 of her Grand Slam titles were won, has remained genuinely elite. It’s a number that argues for taking her more seriously heading into the US Open than her ranking alone would suggest.
Iga Swiatek’s 72.7% places her behind several names not traditionally considered her equal on faster surfaces, which is consistent with the broader story of her season, one of noticeable decline.
What It Means Heading Into the Swing
The clearest signal from this data is that the gap between the very best and the rest is real but not enormous on the women’s side. Sabalenka is the standout, and Rybakina is the clearest second favorite by volume and consistency combined, but from third place down the numbers describe a genuinely competitive group rather than a hierarchy with obvious gaps.
Mboko’s presence ahead of established Grand Slam-level competition is the single most important detail for anyone trying to project the US Open draw, because it suggests her hard-court game has already crossed a threshold that her ranking hasn’t fully caught up to yet. Osaka’s efficiency on a limited sample says the same thing from a different angle: watch for her specifically once she’s had a full tournament to shake off rust, because the underlying level in her matches has been as good as anyone’s outside the top 2.
The rest of the group, Pegula, Muchova, Gauff, and Swiatek, represent the deep, competitive middle of the draw that could produce any combination of quarterfinalists, which is precisely what a spread this tight would predict.
The US Open is very likely to confirm Sabalenka and Rybakina as the players to beat. Who joins them in the second week is genuinely a more open question than the WTA season’s headlines have suggested.
Main Photo Credit: Susan Mullane – USA TODAY Sports
