Issei Okamura defeated Takuya Kumasaka 6-1 6-2 in the M15 Kofu 1 round of 16 on hard. The upset overturned the form book — Takuya Kumasaka came in ranked #556, leading the head-to-head 1–0. Issei Okamura claimed a first win over Takuya Kumasaka in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-03-26 | M15 Tsukuba 1 | R32 | hard | Takuya Kumasaka | 7-5 6-1 |
Averages over each player's completed matches in the selected window (162 vs 200). ATP, WTA & Challenger.
Kumasaka T.: 12 days rest · 2 matches (14d). 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