| ITF - M25 - Guayaquil | 2021/08/02 14:00 | Mateo Barreiros Reyes v McClain Kessler | 4-6,6-3,8-10 |
| ITF - M25 - Portoviejo | 2021/07/28 16:00 | Mateo Barreiros Reyes v Gonzalo Lama | 3-6,4-6 |
| ITF - M25 - Portoviejo | 2021/07/26 20:10 | Mateo Gomez v Mateo Barreiros Reyes | 6-7,6-7 |
| ITF - M25 - Portoviejo | 2021/07/26 14:30 | Mateo Barreiros Reyes v McClain Kessler | 6-1,6-1 |
| ITF - M25 - Santo Domingo | 2021/06/06 15:00 | Ronan Jachuck v Mateo Barreiros Reyes | 6-4,6-1 |
| ITF - M25 - Santo Domingo | 2021/05/30 15:30 | Mateo Barreiros Reyes v Jesse Flores | 2-6,4-6 |
| ITF - M15 - Monastir | 2021/03/29 08:00 | Mateo Barreiros Reyes v Fausto Tabacco | 3-6,3-6 |
| ITF - M15 - Monastir | 2021/03/28 10:30 | Daniel O'Neill v Mateo Barreiros Reyes | 3-6,3-6 |