Stadium: Centre Court Round: 25 Ground: Clay
| ITF M25 Rio do Sul | 2021/10/21 16:30 | Igor Marcondes v Gustavo Heide | 6-7,1-6 |
| ITF M25 Rio do Sul | 2021/10/19 14:30 | Igor Marcondes v Joao Pedro G. Dos Santos | 6-4,6-0 |
| ITF M25 Johannesburg | 2021/09/23 07:00 | Igor Marcondes v Kyle Seelig | 6-1,6-7,1-6 |
| ITF M25 Johannesburg | 2021/09/21 10:30 | Igor Marcondes v Mehluli D A Sibanda | 6-1,7-5 |
| ITF M25 Johannesburg | 2021/09/14 08:00 | Igor Marcondes v Kelsey Stevenson | 5-7,6-7 |
| ITF M25 Sintra | 2021/09/08 14:35 | Dan Added v Igor Marcondes | 6-2,6-4 |
| ITF M25 Poznan | 2021/08/27 11:30 | Pawel Juszczak v Igor Marcondes | 6-2,5-7,6-4 |
| ITF M25 Poznan | 2021/08/26 09:00 | Igor Marcondes v Martins Podzus | 6-4,6-1 |
| ITF M25 Rio do Sul | 2021/10/21 15:05 | Facundo Juarez v Eduardo Ribeiro | 6-7,6-3,7-6 |
| ITF M25 Rio do Sul | 2021/10/20 18:05 | Pedro Gabriel Rodrigues v Eduardo Ribeiro | 0-6,2-6 |
| ITF M15 Recife | 2021/09/25 14:00 | Eduardo Ribeiro v Gustavo Heide | 5-7,4-6 |
| ITF M15 Recife | 2021/09/24 15:25 | Eduardo Ribeiro v Nicolas Zanellato | 6-4,6-7,6-3 |
| ITF M15 Recife | 2021/09/23 16:30 | Eduardo Ribeiro v Asdrubal Gobernate | 6-4,6-4 |
| ITF M15 Recife | 2021/09/22 19:30 | Joao Lucas Reis da Silva v Eduardo Ribeiro | 1-6,7-5,4-6 |
| ITF M15 Antalya | 2021/05/16 07:00 | Eduardo Ribeiro v Arvid Nordquist | 1-6,0-6 |
| ITF M15 Antalya | 2021/05/11 07:00 | Edoardo Eremin v Eduardo Ribeiro | 6-4,7-5 |