Stadium: Quadra Joao Lima Round: 26 Ground: Clay
| 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 Santiago | 2021/10/03 17:25 | Facundo Diaz Acosta v Diego Hidalgo | 6-3,7-6 |
| ITF M25 Madrid | 2021/09/15 10:20 | Facundo Diaz Acosta v Nikolas Sanchez Izquierdo | 3-6,3-6 |
| ITF M25 Aparecida De Goiania | 2021/11/12 16:20 | Daniel Dutra Da Silva v Joao Lucas Reis da Silva | 6-0,6-3 |
| ITF M25 Aparecida De Goiania | 2021/11/11 13:30 | Eduardo Ribeiro v Joao Lucas Reis da Silva | 2-6,6-4,3-6 |
| ITF M25 Aparecida De Goiania | 2021/11/09 15:10 | Sean Hess v Joao Lucas Reis da Silva | 1-6,6-7 |
| ITF M15 Brasilia | 2021/11/03 22:35 | Joao Lucas Reis da Silva v Marcelo Zormann | 6-7,6-7 |
| Challenger Bogota | 2021/10/17 16:45 | Joao Lucas Reis da Silva v Alejandro H Franco | 5-7,4-6 |
| ITF M25 Lima | 2021/10/12 18:40 | Joao Lucas Reis da Silva v Murkel Dellien | 2-6,4-6 |
| ITF M25 Lima | 2021/10/07 20:20 | Michel Vernier v Joao Lucas Reis da Silva | 6-4,6-7,6-1 |
| ITF M25 Lima | 2021/10/05 15:00 | Ignacio Buse v Joao Lucas Reis da Silva | 1-6,5-7 |