Naomi Osaka def. Katerina Siniakova
6-2 5-7 6-1
Naomi Osaka defeated Katerina Siniakova 6-2 5-7 6-1 in the 2026 US Open second round on hard courts on September 3, 2026.
Match Information
Match Statistics
| Stat | Naomi Osaka | Katerina Siniakova |
|---|---|---|
| Serving | ||
AcesServes that land in and are not touched by the returner. | 11 | 3 |
Double faultsService points lost by missing both first and second serve. | 5 | 7 |
First serve %Percentage of service points where the first serve landed in. | 51.1% | 60.0% |
First serve points won %Percentage of points won after making a first serve. | 77.1% | 52.1% |
Second serve points won %Percentage of second-serve points won, including points lost through double faults. | 43.5% | 46.9% |
Break points saved %Percentage of break points won by the server. | 62.5% | 40.0% |
Service points won %Percentage of all points won while serving. | 60.6% | 50.0% |
| Returning | ||
Break points converted %Percentage of break-point chances won by the returner. | 60.0% | 37.5% |
Return points won %Percentage of all points won while returning. | 50.0% | 39.4% |
| Overall | ||
Total points won %Percentage of all completed points won. | 55.8% | 44.2% |
Match Serve+This match’s service points won percentage minus the tour’s season average, in percentage points. Zero is average; +5 means five points above average. Match-weighted available stats; no opponent adjustment. | +3.6 | -7.0 |
Match Return+This match’s return points won percentage minus the tour’s season average, in percentage points. Zero is average; +5 means five points above average. Match-weighted available stats; no opponent adjustment. | +7.0 | -3.6 |
* Match Serve+ and Match Return+ compare this match with the WTA 2026 average from available match stats. Zero is average; +5 means five percentage points above average. No opponent adjustment.
Win Probability
How the market's view of each player's chances changed through the match.
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Player Comparison
| Field | Naomi Osaka | Katerina Siniakova |
|---|---|---|
| Country | JPN | CZE |
| Birth date | Oct 16, 1997 | May 10, 1996 |
| Age | 28 | 30 |
| Height | 180 cm | 174 cm |
| Handedness | Right-Handed | Right-Handed |
| Backhand style | Two-Handed Backhand | Two-Handed Backhand |
| Ranking (entering) | 13 | 42 |
| Ranking points (entering) | 2,846 | 1,234 |
| Elo (entering) | 2,048 | 1,827 |
| Current career W-L | 251–136 | 228–246 |
| Current career earnings | $26,612,806 | $17,388,124 |
Path
Naomi Osaka's path
| Opponent | Score | W-L | H2H | Match Data | Date | Round |
|---|---|---|---|---|---|---|
| Anastasia Zakharova | 7-6(6) 7-6(3) | W | H2H | Match data | Sep 1, 2026 | R128 |
Naomi Osaka's next match
| Opponent | Score | W-L | H2H | Match Data | Date | Round |
|---|---|---|---|---|---|---|
| Elise Mertens | 6-3 3-6 7-5 | W | H2H | Match data | Sep 5, 2026 | R32 |
Katerina Siniakova's path
| Opponent | Score | W-L | H2H | Match Data | Date | Round |
|---|---|---|---|---|---|---|
| Elisabetta Cocciaretto | 6-3 6-2 | W | H2H | Match data | Aug 31, 2026 | R128 |