Guido Ivan Justo leads 4 to 0 over 4 singles meetings since 2023. Last meeting on 26/07/2025 at M15 Santiago.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 26/07/2025 | M15 Santiago | Semi-final | clay | Justo | 6-1 6-4 |
| 10/03/2025 | Santiago Challenger | Qualifiers | clay | Justo | 6-3 5-1 |
| 16/05/2024 | M15 Neuquen | Round 2 | clay | Justo | 4-6 2-6 |
| 12/08/2023 | M15 Arequipa | Semi-final | clay | Justo | 6-7(6) 4-6 |
| clay | Justo 4 - 0 Nunez |
| 2025 | Justo 2 - 0 Nunez |
| 2024 | Justo 1 - 0 Nunez |
| 2023 | Justo 1 - 0 Nunez |
166 wins, 99 losses since 2021 (62.6%).
Last matches: D D V D V
117 wins, 102 losses since 2021 (53.4%).
Last matches: D V V D D
Guido Ivan Justo leads 4 to 0 over 4 singles meetings since 2023.
On 26/07/2025, at M15 Santiago (Semi-final): Guido Ivan Justo won 6-1 6-4.