Stadium: Cancha Raul Viver Round: 14 Ground: Clay
| ITF - M25 Pensacola | 2021/05/20 14:25 | Hernandez Serrano, Juan Alejandro v Gonzalez, Alejandro | 3-6,2-6 |
| ITF M25 Guayaquil | 2021/10/29 15:00 | Hernandez Serrano, Juan Alejandro v Facundo Juarez | 3-6,4-6 |
| ITF M25 Guayaquil | 2021/10/28 18:35 | Hernandez Serrano, Juan Alejandro v Achondo, Gonzalo | 6-0,6-1 |
| ITF M25 Guayaquil | 2021/10/26 15:00 | Hernandez Serrano, Juan Alejandro v Santamaria, Felipe | 6-1,6-3 |
| Bogota, Colombia | 2021/10/17 18:10 | Luca Castelnuovo v Hernandez Serrano, Juan Alejandro | 6-4,6-2 |
| ITF M15 Cancun | 2021/10/09 15:00 | Hernandez Serrano, Juan Alejandro v Christian Langmo | 6-3,3-6,6-7 |
| ITF M15 Cancun | 2021/10/07 16:25 | Hernandez Serrano, Juan Alejandro v Giles Hussey | 4-6,6-2,6-3 |
| ITF M15 Cancun | 2021/10/06 16:30 | Mwendwa Mbithi v Hernandez Serrano, Juan Alejandro | 3-6,2-6 |
| ITF M15 Cancun | 2021/09/24 15:00 | Federico Agustin Gomez v Hernandez Serrano, Juan Alejandro | 3-6,6-4,7-6 |
| Bogota, Colombia | 2021/10/20 15:00 | Matheus P De Almeida v Gonzalez, Alejandro | 6-7,6-1,6-2 |
| Bogota, Colombia | 2021/10/18 19:10 | Gonzalez, Alejandro v Vit Kopriva | 6-2,7-6 |
| Challenger Lima | 2021/09/27 15:00 | Panta Herreros, Jorge Brian v Gonzalez, Alejandro | 7-5,7-5 |
| Challenger Lima | 2021/09/26 16:00 | Huertas Del Pino Cordova, Arklon v Gonzalez, Alejandro | 4-6,7-6,6-7 |
| Ambato, Ecuador | 2021/09/21 15:00 | Gonzalez, Alejandro v Pedro Sakamoto | 3-6,4-6 |
| Ambato, Ecuador | 2021/09/20 15:00 | Gonzalez, Alejandro v Pol Martin Tiffon | 3-6,4-6 |
| Ambato, Ecuador | 2021/09/19 17:10 | Gonzalez, Alejandro v Mendoza, Alejandro | 6-2,6-2 |
| Challenger Quito | 2021/09/16 15:00 | Pol Martin Tiffon v Gonzalez, Alejandro | 4-6,7-6,6-3 |