Adolfo Daniel Vallejo leads 3 to 1 over 4 singles meetings since 2023. Last meeting on 22/11/2025 at Guayaquil Challenger.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 22/11/2025 | Guayaquil Challenger | Semi-final | clay | Vallejo | 6-4 2-6 3-6 |
| 13/11/2025 | Montevideo Challenger | Round 2 | clay | Vallejo | 6-2 3-6 4-6 |
| 18/01/2025 | Buenos Aires Challenger | Semi-final | clay | Vallejo | 7-5 6-2 |
| 12/11/2023 | Montevideo Challenger | Qualifying 1 | clay | Meza | 6-3 4-6 6-7(4) |
| clay | Meza 1 - 3 Vallejo |
| 2025 | Meza 0 - 3 Vallejo |
| 2023 | Meza 1 - 0 Vallejo |
171 wins, 131 losses since 2021 (56.6%).
Last matches: D D D D V
180 wins, 119 losses since 2021 (60.2%).
Last matches: D D V D V
Adolfo Daniel Vallejo leads 3 to 1 over 4 singles meetings since 2023.
On 22/11/2025, at Guayaquil Challenger (Semi-final): Adolfo Daniel Vallejo won 6-4 2-6 3-6.