Stadium: Cancha Central Round: 25 Ground: Clay
| Challenger Segovia Qual | 2018/07/28 11:00 | Diego Hidalgo v Nicolas Alvarez Varona | 3-6,4-6 |
| Challenger - Guayaquil | 2021/11/01 16:00 | Nicolas Alvarez Varona v Alejandro Gonzalez | 4-6,6-7 |
| Challenger - Guayaquil | 2021/10/31 16:00 | Nicolas Alvarez Varona v Francisco Castro | 6-0,6-0 |
| Challenger - Losinj | 2021/10/19 12:00 | Nicolas Alvarez Varona v Nerman Fatic | 5-7,2-6 |
| Challenger - Losinj | 2021/10/18 08:00 | Nicolas Alvarez Varona v Fabien Reboul | 6-4,6-4 |
| Challenger - Losinj | 2021/10/17 08:00 | Nicolas Alvarez Varona v Ivan Sabanov | 6-2,6-2 |
| Challenger Alicante | 2021/10/12 09:45 | N.Sriram Balaji v Nicolas Alvarez Varona | 5-7,6-4,6-4 |
| Challenger - Barcelona | 2021/10/08 09:00 | Hugo Gaston v Nicolas Alvarez Varona | 6-2,6-1 |
| Challenger - Barcelona | 2021/10/07 09:00 | Filip Horansky v Nicolas Alvarez Varona | 4-6,3-6 |
| Challenger - Lima | 2021/10/24 21:10 | Jaroslav Pospisil v Diego Hidalgo | 4-6,6-3,6-3 |
| 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 - Calificari | 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 |