| ITF M25 Santo Domingo | 2021/06/12 13:30 | Igor Marcondes v Juan A H Serrano | 7-5,2-6,7-5 |
| ITF M25 Santo Domingo | 2021/06/11 13:30 | Conner Huertas Del Pino v Juan A H Serrano | 3-6,5-7 |
| ITF M25 Santo Domingo | 2021/06/08 19:45 | Juan A H Serrano v Rowland Phillips | 6-1,3-6,10-8 |
| ITF M25 Santo Domingo | 2021/06/01 13:00 | Juan A H Serrano v Sergio Luis H Ramirez | 6-4,6-3 |
| ITF M25 Pensacola | 2021/05/20 14:25 | Juan A H Serrano v Alejandro Gonzalez | 3-6,2-6 |
| ITF M25 Pensacola | 2021/05/18 16:05 | Juan A H Serrano v Abraham Asaba | 6-1,6-2 |
| UTR Pro Tennis Series Cancun | 2021/04/10 13:00 | Jorge Panta v Juan A H Serrano | 6-4,5-0 |
| UTR Pro Tennis Series Cancun | 2021/04/09 15:30 | Juan A H Serrano v Jose Antonio Rodriguez Rodriguez | 3-0 |