Stadium: Court 17 Round: 54 Ground: Clay
| ITF M25 Aparecida De Goiania | 2021/11/07 18:30 | Gabriel Batagin v Matheus T Rezende | 6-0,6-1 |
| ITF M25 Rio do Sul | 2021/10/17 12:00 | Bruno Fernandez v Gabriel Batagin | 4-6,6-3,10-2 |
| ITF M15 Recife | 2021/09/20 13:00 | Asdrubal Gobernate v Gabriel Batagin | 6-3,4-6,10-7 |
| ITF M25 Aparecida De Goiania | 2021/11/07 17:00 | Gustavo Teisen Pereira v Mateo Barreiros Reyes | 4-6,2-6 |
| ITF M15 Brasilia | 2021/11/04 14:25 | Mateo Barreiros Reyes v Conner Huertas Del Pino | 2-6,4-6 |
| ITF M15 Brasilia | 2021/11/03 18:00 | Mateo Barreiros Reyes v Nicolas Zanellato | 7-6,2-6,6-4 |
| ITF M25 Rio do Sul | 2021/10/20 14:45 | Gilbert S K Junior v Mateo Barreiros Reyes | 3-6,6-1,6-2 |
| ITF M15 Recife | 2021/09/21 22:40 | Pedro Boscardin Dias v Mateo Barreiros Reyes | 6-2,6-2 |
| ITF M25 Medellin | 2021/09/15 18:45 | Jose Pereira v Mateo Barreiros Reyes | 6-2,6-4 |
| ITF M25 Medellin | 2021/09/13 20:00 | Mateo Barreiros Reyes v Sebastian Santibanez | 6-3,6-3 |
| ITF M15 Ibague | 2021/09/08 17:00 | Juan A H Serrano v Mateo Barreiros Reyes | 7-6,6-4 |