Stadium: Court 14 Round: 26 Ground: Clay
| ITF M15 Recife | 2021/09/22 19:30 | Joao Lucas Reis da Silva v Eduardo Ribeiro | 1-6,7-5,4-6 |
| ITF Brazil F9 | 2018/11/14 13:30 | Eduardo Ribeiro v Joao Lucas Reis da Silva | 1-6,1-6 |
| 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 | Igor Marcondes 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 |
| 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 M25 Aparecida De Goiania | 2021/11/09 15:10 | Sean Hess v Joao Lucas Reis da Silva | 1-6,6-7 |
| ITF M15 Brasilia | 2021/11/03 22:35 | Joao Lucas Reis da Silva v Marcelo Zormann | 6-7,6-7 |
| Challenger - Bogota | 2021/10/17 16:45 | Joao Lucas Reis da Silva v Alejandro H Franco | 5-7,4-6 |
| ITF M25 Lima | 2021/10/12 18:40 | Joao Lucas Reis da Silva v Murkel Dellien | 2-6,4-6 |
| ITF M25 Lima | 2021/10/07 20:20 | Michel Vernier v Joao Lucas Reis da Silva | 6-4,6-7,6-1 |
| ITF M25 Lima | 2021/10/05 15:00 | Ignacio Buse v Joao Lucas Reis da Silva | 1-6,5-7 |
| ITF M15 Recife | 2021/09/22 19:30 | Joao Lucas Reis da Silva v Eduardo Ribeiro | 1-6,7-5,4-6 |
| ITF M25 Medellin | 2021/09/19 15:00 | Gilbert S K Junior v Joao Lucas Reis da Silva | 6-2,6-2 |