Stadium: Quadra 2 Round: 25 Ground: Clay
| ITF - M25 Rio Cuarto | 2020/02/25 18:30 | Facundo Diaz Acosta v Gonzalo Villanueva | 6-2,7-5 |
| ITF - M15 Buenos Aires | 2019/09/20 15:00 | Facundo Diaz Acosta v Gonzalo Villanueva | 5-7,1-6 |
| Challenger - Brasilia | 2021/11/23 20:50 | Thiago Seyboth Wild v Facundo Diaz Acosta | 7-6,6-3 |
| Challenger - Campinas | 2021/11/14 16:00 | Facundo Diaz Acosta v Joao Lucas Reis da Silva | 4-6,6-7 |
| Challenger - Guayaquil | 2021/11/02 15:00 | Facundo Juarez v Facundo Diaz Acosta | 3-6,6-4,6-4 |
| Challenger - Buenos Aires | 2021/10/18 17:35 | Hugo Dellien v Facundo Diaz Acosta | 4-6,6-0,6-1 |
| Challenger - Santiago | 2021/10/12 16:00 | Facundo Diaz Acosta v Francisco Cerundolo | 4-6,0-6 |
| Challenger - Santiago | 2021/10/07 18:00 | Nicolas Jarry v Facundo Diaz Acosta | 6-7,7-5,6-4 |
| Challenger - Santiago | 2021/10/05 20:30 | Facundo Diaz Acosta v Tomas Barrios Vera | 6-3,5-7,6-1 |
| Challenger - Santiago | 2021/10/04 15:00 | Facundo Diaz Acosta v Cristian Rodriguez | 6-2,6-2 |
| Challenger - Sao Paulo | 2021/11/29 15:05 | Gonzalo Villanueva v Alejandro Gomez | 6-4,7-6 |
| Challenger - Sao Paulo | 2021/11/28 13:00 | Gonzalo Villanueva v Tomas Lipovsek Puches | 3-6,6-3,6-1 |
| Challenger - Brasilia | 2021/11/21 14:35 | Gonzalo Villanueva v Luca Castelnuovo | 6-7,6-3,3-6 |
| Challenger - Campinas | 2021/11/14 16:00 | Hernan Casanova v Gonzalo Villanueva | 7-6,4-6,7-5 |
| Challenger - Montevideo | 2021/11/09 16:00 | Facundo Bagnis v Gonzalo Villanueva | 6-1,7-6 |
| Challenger - Montevideo | 2021/11/08 16:30 | Tomas Lipovsek Puches v Gonzalo Villanueva | 3-6,2-6 |
| Challenger - Montevideo | 2021/11/07 18:05 | Rodrigo Arus v Gonzalo Villanueva | 1-6,0-6 |
| Challenger - Lima | 2021/10/27 16:00 | Tomas Barrios Vera v Gonzalo Villanueva | 7-5,6-1 |