Stadium: Quadra 3 Round: 25 Ground: Clay
| ITF M25 Aparecida De Goiania | 2021/11/12 15:35 | Ribeiro Marcondes, Igor v Zukas, Matias | 6-2,6-3 |
| 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 | Zukas, Matias v Ryan A Dos Santos | 6-2,6-1 |
| ITF M15 Cochabamba | 2021/11/20 15:50 | Zukas, Matias v Tomas Farjat | 6-3,4-6,4-6 |
| ITF M15 Cochabamba | 2021/11/19 20:50 | Zukas, Matias v Dali Blanch | 6-2,6-0 |
| ITF M15 Cochabamba | 2021/11/18 19:15 | Zukas, Matias v Lautaro Agustin Falabella | 6-1,6-2 |
| ITF M15 Cochabamba | 2021/11/17 18:00 | Zukas, Matias v Chavez, Andres | 6-0,6-2 |
| 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 | Nicolas Zanellato v Zukas, Matias | 1-6,6-3,4-6 |
| 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 |
| ITF M25 Rio do Sul | 2021/10/21 16:30 | Ribeiro Marcondes, Igor v Gustavo Heide | 6-7,1-6 |
| ITF M25 Rio do Sul | 2021/10/19 14:30 | Ribeiro Marcondes, Igor v Joao Pedro G. Dos Santos | 6-4,6-0 |