Stadium: Campo 7 Round: 25 Ground: Clay
| ITF - Medellin M25 | 2021/09/16 15:00 | Jose Pereira v Michael Quintero Aguilar | 6-2,6-3 |
| ITF - Medellin M25 | 2021/09/15 14:55 | Edgar A P Molina v Michael Quintero Aguilar | 1-6,1-6 |
| ITF - Medellin M25 | 2021/09/13 15:00 | Juan Diego Alzate Perilla v Michael Quintero Aguilar | 2-6,0-6 |
| ITF - Medellin M25 | 2021/09/12 15:00 | Manuel Montoya Zuluaga v Michael Quintero Aguilar | 1-6,2-6 |
| ITF - Ibague M15 | 2021/09/08 19:45 | Fletcher Scott v Michael Quintero Aguilar | 6-0,6-1 |
| ITF - Ibague M15 | 2021/09/07 14:00 | Juan Sebastian Osorio v Michael Quintero Aguilar | 1-6,0-6 |
| ITF - Ibague M15 | 2021/09/06 20:35 | Juan Diego Alzate Perilla v Michael Quintero Aguilar | 1-6,3-6 |
| ITF - Cundinamarca M15 | 2021/11/15 18:30 | Nicolas Esteban Rico Arias v Duvan S T Villamil | 4-6,2-6 |