Ground: Clay
| ITF M15 Cordoba | 2024/09/14 15:00 | Fernando Cavallo v Guido Ivan Justo | 3-6,1-6 |
| ITF M15 Neuquen | 2024/05/14 16:05 | Fernando Cavallo v Guido Ivan Justo | 0-6,2-6 |
| Challenger Porto Alegre | 2025/05/02 15:55 | Santiago Rodriguez Taverna v Guido Ivan Justo | 6-4,6-7,6-3 |
| Challenger Porto Alegre | 2025/05/01 14:00 | Guido Ivan Justo v Hernan Casanova | 6-3,6-1 |
| Challenger Porto Alegre | 2025/04/28 17:35 | Guido Ivan Justo v Gonzalo Villanueva | 7-6,7-5 |
| Challenger San Miguel de Tucuman | 2025/04/24 17:35 | Santiago Rodriguez Taverna v Guido Ivan Justo | 6-4,6-3 |
| Challenger San Miguel de Tucuman | 2025/04/23 15:10 | Mateo Barreiros Reyes v Guido Ivan Justo | 6-7,3-6 |
| Challenger Campinas | 2025/04/01 14:00 | Mariano Kestelboim v Guido Ivan Justo | 7-5,6-1 |
| Challenger Concepcion | 2025/03/28 14:00 | Guido Ivan Justo v Nicolas Kicker | 4-6,6-1,1-6 |
| Challenger Concepcion | 2025/03/26 16:05 | Guido Ivan Justo v Renzo Olivo | 7-5,6-4 |
| ITF M25 Lujan | 2025/03/26 16:36 | Nicolas Bruna v Fernando Cavallo | 4-6,6-2,6-2 |
| ITF M15 Villa Maria | 2025/03/20 15:08 | Fernando Cavallo v Pedro Rodrigues | 5-7,1-6 |
| ITF M15 Villa Maria | 2025/03/18 17:58 | Fernando Cavallo v Mateo Carballo | 6-4,6-2 |
| ITF M25 Asuncion | 2025/03/11 11:30 | Fernando Cavallo v Victor Lilov | 4-6,2-6 |
| UTR Pro Tigre | 2025/02/23 12:00 | Fernando Cavallo v Santiago Russo | 6-1,7-5 |
| UTR Pro Tigre | 2025/02/22 16:25 | Fernando Cavallo v Fantino Alberca De Las Casas | 6-2,6-0 |
| UTR Pro Tigre | 2025/02/21 14:55 | Manuel Mouilleron Salvo v Fernando Cavallo | 7-5,7-6 |
| UTR Pro Tigre | 2025/02/20 14:55 | Juan Cruz Martin Manzano v Fernando Cavallo | 2-6,6-2,6-3 |