Level, 1 wins each over 2 singles meetings since 2022. Last meeting on 16/11/2025 at Kobe Challenger.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 16/11/2025 | Kobe Challenger | Final | indoor hard | Watanuki | 3-6 6-1 6-4 |
| 05/03/2022 | Davis Cup, Qualifiers, 1R, SWE-JPN | — | indoor hard | Ymer | 6-3 6-3 |
| indoor hard | Ymer 1 - 1 Watanuki |
| 2025 | Ymer 0 - 1 Watanuki |
| 2022 | Ymer 1 - 0 Watanuki |
192 wins, 187 losses since 2021 (50.7%).
Last matches: D D D D D
161 wins, 112 losses since 2021 (59.0%).
Last matches: V V V V V
Level, 1 wins each over 2 singles meetings since 2022.
On 16/11/2025, at Kobe Challenger (Final): Yosuke Watanuki won 3-6 6-1 6-4.