Stadium: Court Nissan Round: 14 Ground: Clay
| Challenger - Lyon | 2021/06/06 09:30 | Eduard Esteve Lobato v Nikolas Sanchez Izquierdo | 6-4,6-0 |
| Challenger - Oeiras | 2021/05/28 11:55 | Timofey Skatov v Nikolas Sanchez Izquierdo | 7-6,5-7,6-1 |
| Challenger - Oeiras | 2021/05/26 11:25 | Nikolas Sanchez Izquierdo v Tung-Lin Wu | 6-2,7-6 |
| Challenger - Oeiras | 2021/05/25 11:40 | Geoffrey Blancaneaux v Nikolas Sanchez Izquierdo | 3-6,2-6 |
| Challenger - Oeiras | 2021/05/24 10:00 | Lucas Catarina v Nikolas Sanchez Izquierdo | 4-6,2-6 |
| Challenger - Oeiras | 2021/05/23 12:40 | Miguel Gomes v Nikolas Sanchez Izquierdo | 1-6,4-6 |
| ITF - M25 Vic | 2021/05/19 10:20 | Nikolas Sanchez Izquierdo v Benjamin Winter Lopez | 3-6,3-6 |
| ITF - M25 Praha | 2021/05/11 09:30 | Nikolas Sanchez Izquierdo v Jesper De Jong | 4-6,6-2,6-7 |
| Challenger - Tallahassee | 2021/04/18 19:30 | Rafael Matos v Sekou Bangoura | 3-6,4-6 |
| Challenger - Santiago | 2021/03/16 17:10 | Pedro Sousa v Rafael Matos | 6-4,6-3 |
| Challenger - Santiago | 2021/03/15 13:00 | Joao Menezes v Rafael Matos | 6-2,6-4 |
| Challenger - Santiago | 2021/03/14 14:00 | Luis David Martinez v Rafael Matos | 2-6,3-6 |
| ATP - Santiago | 2021/03/06 13:00 | Rafael Matos v Pedro Sakamoto | 3-6,1-6 |
| Challenger - Concepcion | 2021/02/15 15:40 | Thiago Agustin Tirante v Rafael Matos | 6-3,2-6,6-3 |
| Challenger - Concepcion | 2021/02/14 18:35 | Rafael Matos v Diego Hidalgo | 7-5,6-1 |
| Challenger - Guayaquil | 2020/11/14 18:45 | Rafael Matos v Hernan Casanova | 3-6,3-6 |