Adolfo Daniel Vallejo leads 2 to 1 over 3 singles meetings since 2022. Last meeting on 13/01/2026 at Australian Open - Melbourne.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 13/01/2026 | Australian Open - Melbourne | Qualifying 1 | hard | Vallejo | 1-6 2-6 |
| 20/05/2024 | Augsburg Challenger | Round 1 | clay | Mendez | 6-4 5-3 |
| 26/01/2022 | Australian Open (juniors) | Quarter-final | hard | Vallejo | 7-5 6-3 |
| hard | Vallejo 2 - 0 Mendez |
| clay | Vallejo 0 - 1 Mendez |
| 2026 | Vallejo 1 - 0 Mendez |
| 2024 | Vallejo 0 - 1 Mendez |
| 2022 | Vallejo 1 - 0 Mendez |
188 wins, 124 losses since 2021 (60.3%).
Last matches: D V D D V
123 wins, 110 losses since 2021 (52.8%).
Last matches: D V D D V
Adolfo Daniel Vallejo leads 2 to 1 over 3 singles meetings since 2022.
On 13/01/2026, at Australian Open - Melbourne (Qualifying 1): Adolfo Daniel Vallejo won 1-6 2-6.