Stadium: Centre Court Round: 29 Ground: Clay
| ITF M15 - Brasilia | 2021/11/06 14:00 | Marcelo Zormann v Gustavo Heide | 2-6,4-6 |
| ITF M15 - Brasilia | 2021/11/05 15:25 | Eduardo Ribeiro v Gustavo Heide | 3-6,4-6 |
| ITF M15 - Brasilia | 2021/11/04 21:50 | Franco Roncadelli v Gustavo Heide | 5-7,2-6 |
| ITF M15 - Brasilia | 2021/11/03 20:55 | Luis Felipe Miguel v Gustavo Heide | 3-6,3-6 |
| ITF M25 - Rio do Sul | 2021/10/24 16:10 | Pedro Boscardin Dias v Gustavo Heide | 7-6,6-4 |
| ITF M25 - Rio do Sul | 2021/10/23 17:55 | Gustavo Heide v Wilson Leite | 2-6,6-1,7-6 |
| ITF M25 - Rio do Sul | 2021/10/22 13:50 | Gustavo Heide v Nicolas Zanellato | 6-2,3-6,7-6 |
| ITF M25 - Rio do Sul | 2021/10/21 16:30 | Igor Marcondes v Gustavo Heide | 6-7,1-6 |
| 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 |
| ITF M25 - Lima | 2021/10/08 19:10 | Oscar Jose Gutierrez v Conner Huertas Del Pino | 6-3,7-5 |
| ITF M25 - Lima | 2021/10/07 17:55 | Oscar Jose Gutierrez v Boris Arias | 6-1,6-4 |