Tomohiro Masabayashi defeated Keisuke Saitoh 6-4 3-6 6-1 in the M25 Sapporo 1 round of 32 on hard. Tomohiro Masabayashi extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-07-31 | M25 Taipei 1 | R32 | hard | Keisuke Saitoh | 6-1 6-0 |
| 2023-09-12 | M25 Sapporo 2 | R32 | hard | Tomohiro Masabayashi | 7-5 6-3 |
Averages over each player's completed matches in the selected window (15 vs 17). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About