Takuya Kumasaka leads 2 to 0 over 2 singles meetings since 2023. Last meeting on 20/10/2025 at Suzhou Challenger.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 20/10/2025 | Suzhou Challenger | Qualifying 1 | hard | Kumasaka | 6-3 3-6 6-4 |
| 15/08/2023 | M25 Tainan | Round 1 | clay | Kumasaka | 6-3 4-6 6-2 |
| hard | Watanabe 0 - 1 Kumasaka |
| clay | Watanabe 0 - 1 Kumasaka |
| 2025 | Watanabe 0 - 1 Kumasaka |
| 2023 | Watanabe 0 - 1 Kumasaka |
65 wins, 80 losses since 2021 (44.8%).
Last matches: D D D D D
164 wins, 111 losses since 2021 (59.6%).
Last matches: D V V D V
Takuya Kumasaka leads 2 to 0 over 2 singles meetings since 2023.
On 20/10/2025, at Suzhou Challenger (Qualifying 1): Takuya Kumasaka won 6-3 3-6 6-4.