Stadium: Campo 7 Round: 26 Ground: Clay
| ITF M25 Medellin | 2021/09/15 15:00 | Daniel Antonio Nunez v Sergio Luis H Ramirez | 6-3,6-3 |
| ITF M15 Ibague | 2021/09/07 15:40 | Sergio Luis H Ramirez v Pedro Boscardin Dias | 2-6,3-6 |
| ITF M25 Guayaquil | 2021/08/01 14:00 | Sergio Luis H Ramirez v Farzin Danny Amiri | 6-7,2-6 |
| ITF M25 Portoviejo | 2021/07/26 14:30 | Sergio Luis H Ramirez v Tristan McCormick | 6-7,7-6,4-10 |
| ITF M25 Santo Domingo | 2021/06/09 16:55 | Jorge Panta v Sergio Luis H Ramirez | 6-2,6-1 |
| ITF M25 Santo Domingo | 2021/06/08 14:00 | Alan Kohen v Sergio Luis H Ramirez | 2-6,6-2,7-10 |
| ITF M25 Santo Domingo | 2021/06/07 18:00 | Lorenzo Ramon v Sergio Luis H Ramirez | 2-6,2-6 |
| ITF M25 Santo Domingo | 2021/06/01 13:00 | Juan A H Serrano v Sergio Luis H Ramirez | 6-4,6-3 |
| Challenger Bogota | 2021/10/17 19:00 | Johan A Rodriguez Rodriguez v Nicolas Barrientos | 5-7,2-6 |
| ITF M25 Medellin | 2021/09/14 19:40 | Johan A Rodriguez Rodriguez v Joao Lucas Reis da Silva | 3-6,1-6 |
| ITF M15 Ibague | 2021/09/08 17:00 | Johan A Rodriguez Rodriguez v Gustavo Heide | 6-4,6-7,4-6 |