Colin Sinclair defeated Kokoro Isomura 6-3 6-7 6-3 in the M15 Maanshan 3 quarter-final on hard. The upset overturned the form book — Kokoro Isomura came in leading the head-to-head 1–0. Colin Sinclair claimed a first win over Kokoro Isomura in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-07-11 | M15 Tokyo 2 | QF | hard | Kokoro Isomura | 6-3 4-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.
Isomura K.: 6 days rest · 2 matches, 46 games (7d). Higher means fresher. About