Stadium: Cancha 3 Round: 25 Ground: Clay
| Challenger - Concepcion | 2022/01/18 15:45 | Nicolas Alvarez v Hidalgo, Diego | 4-6,7-6,6-4 |
| Challenger - Concepcion | 2022/01/18 15:45 | Nicolas Alvarez v Hidalgo, Diego | 4-6,7-6,6-4 |
| Challenger Blumenau | 2022/01/10 15:00 | Hidalgo, Diego v Eduardo Ribeiro | 7-6,4-6,4-6 |
| Helsinki, Finland | 2021/11/14 13:15 | Kyrian Jacquet v Hidalgo, Diego | 6-3,3-6,6-1 |
| Challenger Guayaquil | 2021/11/02 22:00 | Nicolas Alvarez Varona v Hidalgo, Diego | 2-6,6-4,6-3 |
| Challenger Lima | 2021/10/24 21:10 | Pospisil, Jaroslav v Hidalgo, Diego | 4-6,6-3,6-3 |
| Challenger - Santiago | 2021/10/12 14:00 | Dalibor Svrcina v Hidalgo, Diego | 6-2,6-0 |
| Challenger - Santiago | 2021/10/11 14:00 | Hidalgo, Diego v Perchicot, Mathieu | 2-6,6-3,6-4 |
| Challenger Santiago Qual | 2021/10/10 14:20 | Shintaro Mochizuki v Hidalgo, Diego | 0-6,3-6 |
| Challenger - Concepcion | 2022/01/20 18:05 | Santiago Rodriguez Taverna v Nicolas Alvarez | 6-3,7-6 |
| Challenger - Concepcion | 2022/01/18 15:45 | Nicolas Alvarez v Hidalgo, Diego | 4-6,7-6,6-4 |
| Coupe Davis | 2021/11/27 10:00 | Frunza, Nicolae v Nicolas Alvarez | 6-2,6-4 |
| Challenger Campinas | 2021/11/19 19:00 | Sebastian Baez v Nicolas Alvarez | 6-4,6-3 |
| Challenger Campinas | 2021/11/16 13:00 | Nicolas Alvarez v Pedro Cachin | 4-6,6-4,6-2 |
| Challenger Campinas | 2021/11/15 15:25 | Joao Lucas Reis da Silva v Nicolas Alvarez | 6-2,3-6,3-6 |
| Challenger Campinas | 2021/11/14 14:00 | Luis Rodrigues Batista v Nicolas Alvarez | 1-6,0-6 |
| Montevideo, Uruguay | 2021/11/07 16:30 | Nicolas Alvarez v Lipovsek Puches, Tomas | 2-6,2-6 |