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. ATP, WTA & Challenger.
Isomura K.: 7 days rest · 1 match, 13 games (7d). Higher means fresher. About