Yosuke Watanuki leads 2 to 0 over 2 singles meetings since 2021. Last meeting on 28/07/2025 at National Bank Open - Toronto.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 28/07/2025 | National Bank Open - Toronto | Round 1 | hard | Watanuki | 3-6 6-1 6-4 |
| 17/11/2021 | Champaign Challenger | Round 2 | indoor hard | Watanuki | 6-2 6-1 |
| hard | Altmaier 0 - 1 Watanuki |
| indoor hard | Altmaier 0 - 1 Watanuki |
| 2025 | Altmaier 0 - 1 Watanuki |
| 2021 | Altmaier 0 - 1 Watanuki |
198 wins, 180 losses since 2021 (52.4%).
Last matches: D D V D V
161 wins, 112 losses since 2021 (59.0%).
Last matches: V V V V V
Yosuke Watanuki leads 2 to 0 over 2 singles meetings since 2021.
On 28/07/2025, at National Bank Open - Toronto (Round 1): Yosuke Watanuki won 3-6 6-1 6-4.