Level, 1 wins each over 2 singles meetings since 2025. Last meeting on 02/09/2026 at Zhangjiagang Challenger.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 02/09/2026 | Zhangjiagang Challenger | Round 2 | hard | Tseng | 7-5 6-3 |
| 15/11/2025 | Kobe Challenger | Semi-final | indoor hard | Watanuki | 6-2 2-6 1-6 |
| hard | Watanuki 0 - 1 Tseng |
| indoor hard | Watanuki 1 - 0 Tseng |
| 2026 | Watanuki 0 - 1 Tseng |
| 2025 | Watanuki 1 - 0 Tseng |
150 wins, 110 losses since 2021 (57.7%).
Last matches: D V D D V
195 wins, 161 losses since 2021 (54.8%).
Last matches: D V V V D
Level, 1 wins each over 2 singles meetings since 2025.
On 02/09/2026, at Zhangjiagang Challenger (Round 2): Chun Hsin Tseng won 7-5 6-3.