Kazuki Nishiwaki defeated Ryotaro Matsumura 6-3 3-6 6-3 in the M15 Caloundra 2 round of 32 on hard. Kazuki Nishiwaki extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-05-30 | M15 Karuizawa 1 | R16 | clay | Ryotaro Matsumura | 6-4 6-2 |
| 2023-10-18 | M25 Dharwad 1 | R32 | hard | Kazuki Nishiwaki | 6-2 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.