Jumpei Yamasaki defeated Ryota Tanuma 6-2 6-4 in the M15 Kofu 1 semi-final on hard. Jumpei Yamasaki claimed a first win over Ryota Tanuma in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-09-08 | M25 Sapporo 2 | Q16 | hard | Ryota Tanuma | 6-7(5) 6-3 10-2 |
Averages over each player's completed matches in the selected window (16 vs 9). 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