Stadion: Court 6 Round: 44 Ground: Clay
| ITF - M15 - Ibague | 2021/09/08 17:00 | Nicolas Buitrago v Cristobal Castro | 6-3,6-1 |
| ITF - M25 - Medellín | 2021/09/13 15:00 | Cristobal Castro v Kevin Gonzalez | 6-4,5-7,10-5 |
| ITF - M15 - Ibague | 2021/09/08 17:00 | Nicolas Buitrago v Cristobal Castro | 6-3,6-1 |
| ITF - M15 - Ibague | 2021/09/07 14:00 | Cristobal Castro v Amador Salazar | 7-6,6-4 |
| ITF - M15 - Ibague | 2021/09/05 16:30 | Cristobal Castro v Patricio Embry | 6-3,6-3 |
| ITF - M25 - Guayaquil | 2021/08/02 17:00 | Noah Schachter v Cristobal Castro | 7-6,6-3 |
| ITF - M25 - Guayaquil | 2021/08/01 19:00 | Nicolas Esteban Rico Arias v Cristobal Castro | 1-6,4-6 |
| ITF - M25 - Guayaquil | 2021/08/01 14:00 | Miguel L Sicco v Cristobal Castro | 6-7,2-6 |
| ITF - M25 - Portoviejo | 2021/07/28 14:30 | Jose Pereira v Cristobal Castro | 6-2,6-1 |
| ITF - M25 - Medellín | 2021/09/13 15:00 | Jose E Yapur v Nicolas Buitrago | 0-6,2-6 |
| ITF - M25 - Medellín | 2021/09/12 15:00 | Nicolas Buitrago v Oscar Matias Leiva Biason | 6-0,6-1 |
| ITF - M15 - Ibague | 2021/09/09 14:30 | Juan Sebastian Gomez v Nicolas Buitrago | 6-2,7-6 |
| ITF - M15 - Ibague | 2021/09/08 17:00 | Nicolas Buitrago v Cristobal Castro | 6-3,6-1 |
| ITF - M15 - Ibague | 2021/09/07 14:00 | Nicolas Buitrago v Sebastian Santibanez | 6-4,6-2 |
| ITF - M15 - Ibague | 2021/09/05 14:00 | Nicolas Buitrago v Mateo Castaneda | 6-1,6-0 |
| Kolumbien - National Exhibition | 2020/08/21 18:30 | Nicolas Buitrago v Daniel Mora | 6-4,6-4 |
| Kolumbien - National Exhibition | 2020/08/21 16:00 | Nicolas Buitrago v Sebastian Lopez | 6-2,6-2 |