Stadium: Cancha 4 Round: 25 Ground: Clay
| Challenger Buenos Aires | 2021/10/18 21:00 | Nicolas Kicker v Nicolas Alvarez | 6-3,2-6,6-3 |
| Challenger Santiago | 2021/10/12 14:00 | Nicolas Alvarez v Sebastian Baez | 5-7,3-6 |
| Challenger Santiago | 2021/10/11 16:50 | Lucas Catarina v Nicolas Alvarez | 6-1,3-6,4-6 |
| Challenger Santiago Qual | 2021/10/10 14:00 | Nicolas Bruna v Nicolas Alvarez | 1-6,0-6 |
| Challenger Santiago | 2021/10/05 19:50 | Nicolas Alvarez v Camilo Ugo Carabelli | 5-7,1-6 |
| Challenger Santiago | 2021/10/04 16:30 | Nicolas Alvarez v Carlos Gomez-Herrera | 6-3,1-6,6-4 |
| Challenger Santiago | 2021/10/03 17:40 | Nicolas Alvarez v Matias Soto | 7-6,6-1 |
| Challenger Lima | 2021/09/28 16:45 | Nicolas Alvarez v Facundo Mena | 3-6,7-6,3-6 |
| Challenger Santiago | 2021/10/12 14:00 | Dalibor Svrcina v Diego Hidalgo | 6-2,6-0 |
| Challenger Santiago | 2021/10/11 14:00 | Diego Hidalgo v Mathieu Perchicot | 2-6,6-3,6-4 |
| Challenger Santiago Qual | 2021/10/10 14:20 | Shintaro Mochizuki v Diego Hidalgo | 0-6,3-6 |
| Challenger Santiago | 2021/10/03 17:25 | Facundo Diaz Acosta v Diego Hidalgo | 6-3,7-6 |
| Challenger Ambato | 2021/09/22 15:00 | Diego Hidalgo v Facundo Mena | 4-6,3-6 |
| Challenger Quito | 2021/09/13 20:00 | Roberto Quiroz v Diego Hidalgo | 6-4,7-5 |
| Challenger Pozoblanco | 2021/07/19 15:00 | Michael Geerts v Diego Hidalgo | 7-6,6-3 |
| Challenger Pozoblanco | 2021/07/18 17:45 | Carlos Matarredona Valor v Diego Hidalgo | 4-6,5-7 |