Stadium: Court 5 Round: 25 Ground: Clay
| Challenger Porto Alegre | 2025/04/28 17:35 | Guido Ivan Justo v Gonzalo Villanueva | 7-6,7-5 |
| Challenger San Miguel de Tucuman | 2025/04/22 18:30 | Facundo Bagnis v Gonzalo Villanueva | 6-4,6-1 |
| Challenger Campinas | 2025/04/01 18:20 | Matias Soto v Gonzalo Villanueva | 7-6,6-3 |
| Challenger Concepcion | 2025/03/24 19:40 | Gonzalo Villanueva v Genaro Alberto Olivieri | 5-7,1-6 |
| Challenger Asuncion | 2025/03/20 22:50 | Gonzalo Villanueva v Tomas Barrios Vera | 7-6,4-6,3-6 |
| Challenger Asuncion | 2025/03/18 23:05 | Hernando J E Isnardi v Gonzalo Villanueva | 6-7,1-6 |
| Challenger Santiago | 2025/03/09 18:05 | Gonzalo Villanueva v Arklon H D Pino | 6-1,6-7,4-6 |
| Challenger Cordoba | 2025/03/07 14:00 | Gonzalo Villanueva v Thiago Agustin Tirante | 4-6,4-6 |
| Challenger Ostrava | 2025/04/27 09:00 | Guy Den Ouden v Michael Vrbensky | 4-6,6-2,4-6 |
| Challenger Oeiras | 2025/04/17 16:10 | Raphael Collignon v Guy Den Ouden | 6-4,7-6 |
| Challenger Oeiras | 2025/04/17 09:00 | Guy Den Ouden v Bernabe Zapata Miralles | 7-5,4-6,7-6 |
| Challenger Oeiras | 2025/04/14 09:00 | August Holmgren v Guy Den Ouden | 1-6,3-6 |
| Challenger Oeiras | 2025/04/13 10:25 | Diogo Marques v Guy Den Ouden | 1-6,1-6 |
| ITF M25 Santa Margherita | 2025/04/12 08:30 | Gauthier Onclin v Guy Den Ouden | 6-0,6-2 |
| ITF M25 Santa Margherita | 2025/04/11 11:20 | Carlos Sanchez Jover v Guy Den Ouden | 3-6,2-6 |
| ITF M25 Santa Margherita | 2025/04/10 08:00 | Raul Brancaccio v Guy Den Ouden | 3-6,2-6 |