Stadium: Court 3 Round: 25
| ITF M25 Portoviejo | 2021/07/28 16:00 | Ribeiro Marcondes, Igor v Tristan McCormick | 5-7,6-7 |
| ITF M15 Edwardsville | 2021/07/22 14:20 | Ribeiro Marcondes, Igor v Eliot Spizzirri | 6-7,6-7 |
| ITF M15 Edwardsville | 2021/07/21 14:00 | Ribeiro Marcondes, Igor v Nettles, Jibril | 6-3,6-1 |
| ITF - M25 Santo Domingo | 2021/06/13 13:45 | Ribeiro Marcondes, Igor v Nicolas Kicker | 7-6,1-6,6-7 |
| ITF - M25 Santo Domingo | 2021/06/12 13:30 | Ribeiro Marcondes, Igor v Hernandez Serrano, Juan Alejandro | 7-5,2-6,7-5 |
| ITF - M25 Santo Domingo | 2021/06/11 13:30 | Ribeiro Marcondes, Igor v Patino, Luis | 6-3,6-4 |
| ITF - M25 Santo Domingo | 2021/06/10 14:50 | Ribeiro Marcondes, Igor v Noah Schachter | 6-2,6-3 |
| ITF - M25 Santo Domingo | 2021/06/09 12:55 | Shintaro Imai v Ribeiro Marcondes, Igor | 6-7,4-6 |
| ITF M25 Guayaquil | 2021/08/02 19:30 | Gomez, Mateo v Gonzalez, Javier (Chl) | 5-7,4-6 |
| ITF M25 Guayaquil | 2021/08/02 14:00 | Gomez, Mateo v Alban, Ricardo | 6-3,6-1 |
| ITF M25 Portoviejo | 2021/07/26 20:10 | Gomez, Mateo v Mateo Barreiros Reyes | 6-7,6-7 |
| ITF M25 Portoviejo | 2021/07/26 14:30 | Gomez, Mateo v Juan Sebastian Osorio | 7-5,6-3 |
| UTR Pro Tennis Series Cancun | 2021/04/05 14:30 | Gomez, Mateo v Doria, Luciano | 6-7,7-5,5-2 |
| UTR Pro Tennis Series Cancun | 2021/04/04 16:15 | Jean-Baptiste Badon v Gomez, Mateo | 6-2,6-7,5-7 |
| UTR Pro Tennis Series Cancun | 2021/04/03 17:00 | Gomez, Mateo v Sullivan, Charles | 3-2 |
| UTR Pro Tennis Series Cancun | 2021/04/02 16:00 | Drew Van Orderlain v Gomez, Mateo | 7-6,1-6,7-6 |