Ryota Tanuma defeated Shunsuke Nakagawa 5-7 6-1 6-2 in the M25 Sapporo 1 round of 16 on hard. Ryota Tanuma extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-10-23 | M15 Tanagura 1 | R16 | hard | Ryota Tanuma | 6-3 6-7(4) 6-3 |
| 2025-07-09 | M15 Tokyo 2 | R32 | hard | Ryota Tanuma | 7-6(8) 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.