Jan Kumstat leads 2 to 0 over 2 singles meetings since 2025. Last meeting on 14/07/2026 at Bunschoten Challenger.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 14/07/2026 | Bunschoten Challenger | Round 1 | clay | Kumstat | 3-6 |
| 04/05/2025 | Prague Challenger | Qualifying 1 | clay | Kumstat | 7-5 6-7(5) 1-6 |
| clay | Squire 0 - 2 Kumstat |
| 2026 | Squire 0 - 1 Kumstat |
| 2025 | Squire 0 - 1 Kumstat |
222 wins, 166 losses since 2021 (57.2%).
Last matches: D D D D D
75 wins, 48 losses since 2021 (61.0%).
Last matches: V D D D V
Jan Kumstat leads 2 to 0 over 2 singles meetings since 2025.
On 14/07/2026, at Bunschoten Challenger (Round 1): Jan Kumstat won 3-6.