Stadium: Quadra Central Round: 14 Ground: Clay
| ITF M15 Brasilia | 2021/11/02 21:55 | Ribeiro Marcondes, Igor v Eduardo Ribeiro | 5-7,4-6 |
| Challenger Sao Paulo | 2021/11/29 13:00 | Zukas, Matias v Eduardo Ribeiro | 7-5,6-3 |
| Challenger Sao Paulo | 2021/11/28 13:00 | Eduardo Ribeiro v Federico Zeballos | 6-4,7-6 |
| ITF M25 Aparecida De Goiania | 2021/11/11 13:30 | Eduardo Ribeiro v Joao Lucas Reis da Silva | 2-6,6-4,3-6 |
| ITF M25 Aparecida De Goiania | 2021/11/09 13:35 | Victor Tosetto v Eduardo Ribeiro | 4-6,6-3,6-7 |
| ITF M15 Brasilia | 2021/11/05 15:25 | Eduardo Ribeiro v Gustavo Heide | 3-6,4-6 |
| ITF M15 Brasilia | 2021/11/04 13:00 | Eduardo Ribeiro v Gabriel P Tumasonis | 6-2,6-1 |
| ITF M15 Brasilia | 2021/11/02 21:55 | Ribeiro Marcondes, Igor v Eduardo Ribeiro | 5-7,4-6 |
| ITF M25 Rio do Sul | 2021/10/21 15:05 | Facundo Juarez v Eduardo Ribeiro | 6-7,6-3,7-6 |
| Challenger Sao Paulo | 2021/12/02 13:00 | Ribeiro Marcondes, Igor v Gustavo Heide | 6-4,4-6,3-6 |
| Challenger Sao Paulo | 2021/11/30 18:40 | Zukas, Matias v Ribeiro Marcondes, Igor | 1-6,1-6 |
| Challenger Sao Paulo | 2021/11/29 15:25 | Enrique Bogo v Ribeiro Marcondes, Igor | 1-6,6-3,1-6 |
| ITF M25 Aparecida De Goiania | 2021/11/13 13:55 | Daniel Dutra Da Silva v Ribeiro Marcondes, Igor | 5-7,7-5,6-2 |
| ITF M25 Aparecida De Goiania | 2021/11/12 15:35 | Ribeiro Marcondes, Igor v Zukas, Matias | 6-2,6-3 |
| ITF M25 Aparecida De Goiania | 2021/11/11 16:00 | Ribeiro Marcondes, Igor v Valerio Aboian | 6-1,6-3 |
| ITF M25 Aparecida De Goiania | 2021/11/09 16:10 | Ribeiro Marcondes, Igor v Gabriel Roveri Sidney | 6-0,6-2 |
| ITF M15 Brasilia | 2021/11/02 21:55 | Ribeiro Marcondes, Igor v Eduardo Ribeiro | 5-7,4-6 |