Kokoro Isomura defeated Ryotaro Matsumura 6-1 7-6 in the M15 Tsukuba 1 semi-final on hard. The result followed the form book — Kokoro Isomura came in leading the head-to-head 1–0. Kokoro Isomura extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-07-08 | M15 Tokyo 2 | R32 | hard | Kokoro Isomura | 6-7(4) 6-4 6-3 |
Averages over each player's completed matches in the selected window (136 vs 33). ATP, WTA & Challenger.
Isomura K.: 14 days rest · 1 match (14d). Higher means fresher. About
wins 58% of points on serve vs Isomura K.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About