Stadium: Court 14 Round: 26 Ground: Clay
| ITF M25 Aparecida De Goiania | 2021/11/10 15:00 | Hernando J E Isnardi v Caio Gruber | 2-6,6-3,4-6 |
| ITF M25 Aparecida De Goiania | 2021/11/08 14:30 | Caio Gruber v Leonardo Bastos | 6-1,6-3 |
| ITF M25 Aparecida De Goiania | 2021/11/07 14:00 | Caio Gruber v Victor Bini | 6-3,4-6,10-2 |
| ITF M15 Brasilia | 2021/11/01 14:30 | Caio Gruber v Luis Rodrigues Batista | 6-7,4-6 |
| ITF M25 Rio do Sul | 2021/10/20 16:30 | Nicolas Zanellato v Caio Gruber | 6-2,6-1 |
| ITF M25 Rio do Sul | 2021/10/18 17:35 | Caio Gruber v Gustavo Tedesco | 6-3,6-3 |
| ITF M15 Recife | 2021/09/23 22:00 | Jose Pereira v Caio Gruber | 6-1,6-1 |
| ITF M15 Recife | 2021/09/22 13:00 | Caio Gruber v Andre Miele | 6-4,6-4 |
| ITF M25 Aparecida De Goiania | 2021/11/10 15:00 | Enrique Bogo v Oscar Jose Gutierrez | 5-7,2-6 |
| ITF M15 Brasilia | 2021/11/07 12:30 | Gustavo Heide v Oscar Jose Gutierrez | 2-6,6-0,6-4 |
| ITF M15 Brasilia | 2021/11/04 13:00 | Dali Blanch v Oscar Jose Gutierrez | 3-6,4-6 |
| ITF M15 Brasilia | 2021/11/03 15:50 | Joao Eduardo Schiessl v Oscar Jose Gutierrez | 3-6,5-7 |
| ITF M25 Rio do Sul | 2021/10/21 16:10 | Nicolas Zanellato v Oscar Jose Gutierrez | 6-7,6-1,6-1 |
| ITF M25 Rio do Sul | 2021/10/20 16:40 | Amnon Felipe v Oscar Jose Gutierrez | 0-6,4-6 |
| ITF M25 Lima | 2021/10/12 16:20 | Franco Roncadelli v Oscar Jose Gutierrez | 6-0,7-6 |
| ITF M25 Lima | 2021/10/09 15:00 | Oscar Jose Gutierrez v Daniel Dutra Da Silva | 5-7,7-5,4-6 |