Daisuke Sumizawa advanced when Takuya Kumasaka retired 6-0 1-0 in the M25 Takasaki 1 round of 32. Daisuke Sumizawa narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-09-18 | M25 Takasaki 1 | R16 | hard | Takuya Kumasaka | 3-6 7-5 7-6(1) |
| 2025-03-13 | M15 Hinode 1 | R16 | hard | Takuya Kumasaka | 3-6 6-3 7-5 |
| 2023-06-22 | M25 Anseong 1 | R16 | clay | Daisuke Sumizawa | 7-5 7-6(4) |
Averages over each player's completed matches in the selected window (11 vs 38). ATP, WTA & Challenger.
Kumasaka T.: 6 days rest · 2 matches, 46 games (7d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About