Adolfo Daniel Vallejo leads 4 to 1 over 5 singles meetings since 2024. Last meeting on 21/11/2025 at Guayaquil Challenger.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 21/11/2025 | Guayaquil Challenger | Quarter-final | clay | Vallejo | 2-6 4-6 |
| 07/10/2025 | Cali Challenger | Round 1 | clay | Ambrogi | 4-6 4-6 |
| 16/02/2025 | M25 Punta del Este | Final | clay | Vallejo | 6-1 5-4 |
| 02/02/2025 | Rosario Challenger | Qualifying 1 | clay | Vallejo | 4-6 6-2 6-2 |
| 27/09/2024 | Antofagasta Challenger | Quarter-final | clay | Vallejo | 4-6 6-2 1-6 |
| clay | Vallejo 4 - 1 Ambrogi |
| 2025 | Vallejo 3 - 1 Ambrogi |
| 2024 | Vallejo 1 - 0 Ambrogi |
180 wins, 119 losses since 2021 (60.2%).
Last matches: D D V D V
181 wins, 116 losses since 2021 (60.9%).
Last matches: D V D V D
Adolfo Daniel Vallejo leads 4 to 1 over 5 singles meetings since 2024.
On 21/11/2025, at Guayaquil Challenger (Quarter-final): Adolfo Daniel Vallejo won 2-6 4-6.