Katerina Siniakova def. Katie Boulter
6-1 6-4
Katerina Siniakova defeated Katie Boulter 6-1 6-4 in the 2026 Japan Women's Open semifinal on hard courts on October 24, 2026.
Match Information
Match Statistics
| Stat | Katerina Siniakova | Katie Boulter |
|---|---|---|
| Serving | ||
AcesServes that land in and are not touched by the returner. | 0 | 1 |
Double faultsService points lost by missing both first and second serve. | 4 | 6 |
First serve %Percentage of service points where the first serve landed in. | 55.8% | 65.1% |
First serve points won %Percentage of points won after making a first serve. | 75.9% | 53.5% |
Second serve points won %Percentage of second-serve points won, including points lost through double faults. | 39.1% | 30.4% |
Break points saved %Percentage of break points won by the server. | 33.3% | 66.7% |
Service points won %Percentage of all points won while serving. | 59.6% | 45.5% |
| Returning | ||
Break points converted %Percentage of break-point chances won by the returner. | 33.3% | 66.7% |
Return points won %Percentage of all points won while returning. | 54.5% | 40.4% |
| Overall | ||
Total points won %Percentage of all completed points won. | 56.8% | 43.2% |
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. | +2.7 | -11.5 |
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. | +11.5 | -2.7 |
* 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 | Katerina Siniakova | Katie Boulter |
|---|---|---|
| Country | CZE | GBR |
| Birth date | May 10, 1996 | Aug 1, 1996 |
| Age | 30 | 30 |
| Height | 174 cm | 182 cm |
| Handedness | Right-Handed | Right-Handed |
| Backhand style | Two-Handed Backhand | Two-Handed Backhand |
| Ranking (entering) | 86 | 58 |
| Ranking points (entering) | 865 | 1,042 |
| Elo (entering) | 1,844 | 1,805 |
| Current career W-L | 234–248 | 100–99 |
| Current career earnings | $18,348,864 | $4,995,682 |
Path
Katerina Siniakova's path
| Opponent | Score | W-L | H2H | Match Data | Date | Round |
|---|---|---|---|---|---|---|
| Mary Stoiana | 6-1 6-2 | W | H2H | Match data | Oct 23, 2026 | QF |
| Magda Linette | 6-4 6-1 | W | H2H | Match data | Oct 22, 2026 | R16 |
| Peyton Stearns | 6-4 0-6 4-0 (ret.) | W | H2H | Match data | Oct 20, 2026 | R32 |
Katerina Siniakova's next match
| Opponent | Score | W-L | H2H | Match Data | Date | Round |
|---|---|---|---|---|---|---|
| Ashlyn Krueger | 6-1 6-0 | W | H2H | Match data | Oct 25, 2026 | F |
Katie Boulter's path
| Opponent | Score | W-L | H2H | Match Data | Date | Round |
|---|---|---|---|---|---|---|
| Antonia Ruzic | 3-6 6-3 6-3 | W | H2H | Match data | Oct 23, 2026 | QF |
| Viktorija Golubic | 6-2 6-1 | W | H2H | Match data | Oct 21, 2026 | R16 |
| Himeno Sakatsume | 6-3 6-1 | W | H2H | Match data | Oct 19, 2026 | R32 |