Stadium: Court 5 Round: 27 Ground: Clay
| ITF M15 Cancun | 2020/01/29 16:10 | Juan A H Serrano v Gerardo L Villasenor | 6-7,7-5,5-7 |
| ITF M15 Ibague | 2021/09/09 14:30 | Juan A H Serrano v Luciano Tacchi | 6-4,6-3 |
| ITF M15 Ibague | 2021/09/08 17:00 | Juan A H Serrano v Mateo Barreiros Reyes | 7-6,6-4 |
| UTR Pro Tennis Series Manzanillo | 2021/08/14 13:00 | Luis Patino v Juan A H Serrano | 4-6,6-2,6-2 |
| UTR Pro Tennis Series Manzanillo | 2021/08/13 14:30 | Juan A H Serrano v Lazaro Navarro-Batles | 6-3,6-0 |
| UTR Pro Tennis Series Manzanillo | 2021/08/12 16:00 | Juan A H Serrano v Alan Magadan | 7-6,6-7,6-0 |
| UTR Pro Tennis Series Manzanillo | 2021/08/11 16:00 | Takeyasu Sekiguchi v Juan A H Serrano | 4-6,6-3,3-6 |
| UTR Pro Tennis Series Manzanillo | 2021/08/10 13:00 | Marcelo Sepulveda v Juan A H Serrano | 1-6,3-6 |
| ITF M25 Guayaquil | 2021/08/05 14:30 | Jose Pereira v Juan A H Serrano | 6-3,6-3 |
| ITF M15 Ibague | 2021/09/09 16:55 | Mateo Gomez v Gerardo L Villasenor | 6-0,3-6,1-6 |
| ITF M15 Ibague | 2021/09/07 19:45 | Murkel Dellien v Gerardo L Villasenor | 4-6,6-7 |
| UTR Pro Tennis Series Manzanillo | 2021/08/15 14:00 | Luis Patino v Gerardo L Villasenor | 6-2,6-4 |
| UTR Pro Tennis Series Manzanillo | 2021/08/14 14:30 | Alan Sau Franco v Gerardo L Villasenor | 4-6,2-6 |
| UTR Pro Tennis Series Manzanillo | 2021/08/13 16:00 | Rafael De Alba v Gerardo L Villasenor | 2-6,4-6 |
| UTR Pro Tennis Series Manzanillo | 2021/08/12 14:30 | Manuel S Montemayor v Gerardo L Villasenor | 5-7,4-6 |
| UTR Pro Tennis Series Manzanillo | 2021/08/10 14:30 | Nathan Oppenheim v Gerardo L Villasenor | 5-7,0-6 |
| UTR Pro Tennis Series Manzanillo | 2021/08/09 17:00 | Gerardo L Villasenor v Jose Antonio Rodriguez Rodriguez | 6-4,5-2 |