WTA · Head to Head
Katie Boulter vs Katerina Siniakova
11
In short
Katie Boulter and Katerina Siniakova are tied in their head-to-head, 1–1. Most recent meeting: Semifinal – Japan Open - Osaka 2026, won by Katerina Siniakova (6-1 6-4). Biggest clash so far: R128 – Mutua Madrid Open - Madrid 2025 (WTA 1000), won by Katie Boulter.
Head-to-head in numbers
Wins by category and stats from the scores.
| Katie Boulter | — | Katerina Siniakova |
|---|---|---|
| 1 | WTA 1000 | 0 |
| 0 | WTA 250 | 1 |
| 2 | Sets won | 3 |
| 0 | Tie-breaks won | 0 |
| 1 | Deciding sets won | 0 |
All meetings
| Year | Tournament | Round | Winner | Score |
|---|---|---|---|---|
| 2026 | Japan Open - Osaka · WTA 250 | Semifinal | Katerina Siniakova | 6-1 6-4 |
| 2025 | Mutua Madrid Open - Madrid · WTA 1000 | R128 | Katie Boulter | 4-6 6-2 6-1 |
Based on tournaments synced by youaretennis.com: the history grows over time.
Comparison
| Katie Boulter | — | Katerina Siniakova |
|---|---|---|
| 48 | Ranking | 49 |
| 1.115 | Points | 1.114 |
| 30.3 | Age | 30.5 |
 United Kingdom | Country |  Czechia |
| 11-19 | 2025 record | 17-20 |
| 0 | 2025 titles | 0 |
| 2 | Titles 2021-2025 | 3 |
Records and titles: Grand Slams, WTA 1000, 500 and 250 (no WTA Finals or WTA 125).
Recent form
The last 5 matches played.
Katie Boulter
- L
vs Katerina Siniakova · 6-1 6-4
Japan Open - Osaka · Semifinal · 2026
- W
vs Antonia Ruzic · 3-6 6-3 6-3
Japan Open - Osaka · Quarterfinal · 2026
- W
vs Viktorija Golubic · 6-2 6-1
Japan Open - Osaka · Round of 16 · 2026
- W
vs Himeno Sakatsume · 6-3 6-1
Japan Open - Osaka · R32 · 2026
- L
vs Diana Shnaider · 6-3 6-1
Wuhan Open - Wuhan · R64 · 2026
Katerina Siniakova
- L
vs Claire Liu · w/o
Guangzhou Open - Guangzhou · Round of 16 · 2026
- W
vs Lanlana Tararudee · 2-6 6-1 6-4
Guangzhou Open - Guangzhou · R32 · 2026
- W
vs Ashlyn Krueger · 6-1 6-0
Japan Open - Osaka · Final · 2026
- W
vs Katie Boulter · 6-1 6-4
Japan Open - Osaka · Semifinal · 2026
- W
vs Mary Stoiana · 6-1 6-2
Japan Open - Osaka · Quarterfinal · 2026