Keisuke Saitoh defeated Kokoro Isomura 6-3 6-4 in the M25 Taipei 1 round of 16 on hard. Keisuke Saitoh extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-09-09 | M25 Sapporo | R32 | hard | Keisuke Saitoh | 6-4 6-1 |
| 2024-09-06 | M25 Sapporo 1 | QF | hard | Kokoro Isomura | 6-2 6-4 |
Averages over each player's completed matches in the selected window (88 vs 136). ATP, WTA & Challenger.
Isomura K.: 10 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