Kazuki Nishiwaki leads 2 to 1 over 3 singles meetings since 2023. Last meeting on 30/05/2024 at M15 Karuizawa.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 30/05/2024 | M15 Karuizawa | Round 2 | clay | Matsumura | 6-4 6-2 |
| 18/10/2023 | M25 Dharwad | Round 1 | hard | Nishiwaki | 6-2 7-5 |
| 01/08/2023 | M15 Caloundra | Round 1 | hard | Nishiwaki | 6-3 3-6 6-3 |
| clay | Matsumura 1 - 0 Nishiwaki |
| hard | Matsumura 0 - 2 Nishiwaki |
| 2024 | Matsumura 1 - 0 Nishiwaki |
| 2023 | Matsumura 0 - 2 Nishiwaki |
82 wins, 59 losses since 2021 (58.2%).
Last matches: D D V D V
99 wins, 98 losses since 2021 (50.3%).
Last matches: D D V V D
Kazuki Nishiwaki leads 2 to 1 over 3 singles meetings since 2023.
On 30/05/2024, at M15 Karuizawa (Round 2): Ryotaro Matsumura won 6-4 6-2.