Jumpei Yamasaki leads 2 to 0 over 2 singles meetings since 2025. Last meeting on 24/03/2026 at M15 Tsukuba.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 24/03/2026 | M15 Tsukuba | Round 1 | hard | Yamasaki | 6-1 3-1 |
| 05/08/2025 | M15 Singapore | Round 1 | indoor hard | Yamasaki | 6-4 6-4 |
| hard | Yamasaki 1 - 0 Oki |
| indoor hard | Yamasaki 1 - 0 Oki |
| 2026 | Yamasaki 1 - 0 Oki |
| 2025 | Yamasaki 1 - 0 Oki |
100 wins, 81 losses since 2021 (55.2%).
Last matches: D D V V V
46 wins, 43 losses since 2021 (51.7%).
Last matches: D D V V V
Jumpei Yamasaki leads 2 to 0 over 2 singles meetings since 2025.
On 24/03/2026, at M15 Tsukuba (Round 1): Jumpei Yamasaki won 6-1 3-1.