Naomi Osaka advanced to the next round of the US Open with a victory over Katerina Siniakova in the Round of 64. Osaka won the match 6-2, 5-7, 6-1. In the match, Osaka hit 8 aces and 4 double faults, while Siniakova had 2 aces and 6 double faults; both players converted 50% of break points, with Osaka securing 4 service breaks to Siniakova's 3.
Generated automatically from Umpiry match data.
Osaka N. came through in three sets, breaking twice in each.
Break of serve
Osaka N. and Siniakova K. faced 10 of the same opponents in the last 12 months. Osaka N. went 13–0 (100%) against them, Siniakova K. 7–5 (58%). Osaka N. came out better against 3 of 7 comparable opponents, Siniakova K. against 0.
Hard: Osaka N. leads 2–0 · Grass: Osaka N. leads 1–0 · Clay: Siniakova K. leads 1–0
Naomi Osaka beat Katerina Siniakova 6-2 5-7 6-1. Umpiry, "Naomi Osaka vs Katerina Siniakova — US Open Round of 64", https://umpiry.com/match/2026-09-03/osaka-vs-siniakova-us-open-r64?utm_source=cite (as of 3 September 2026).