Stadium: Centre Court Round: 25 Ground: Clay
| 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 |
| ITF M25 Medellin | 2021/09/18 15:00 | Gerardo L Villasenor v Joao Lucas Reis da Silva | 2-6,6-7 |
| ITF M25 Medellin | 2021/09/17 14:50 | Juan Sebastian Gomez v Joao Lucas Reis da Silva | 1-6,4-6 |
| ITF M15 Brasilia | 2021/11/02 11:55 | Marcelo Zormann v Bruno Stefani Figlio | 6-0,6-2 |
| ITF M15 Brasilia | 2021/11/01 12:00 | Marcelo Zormann v Ronaldo Alexandre | 6-0,6-2 |
| ITF M25 Rio do Sul | 2021/10/22 14:20 | Pedro Boscardin Dias v Marcelo Zormann | 6-3,5-7,6-3 |
| ITF M25 Rio do Sul | 2021/10/21 13:10 | Marcelo Zormann v Daniel Dutra Da Silva | 6-4,4-6,6-1 |
| ITF M25 Rio do Sul | 2021/10/20 17:20 | Marcelo Zormann v Enrique Bogo | 6-3,6-1 |
| ITF M25 Rio do Sul | 2021/10/18 18:30 | Marcelo Zormann v Augusto Giacomolli de Andrade | 6-4,6-0 |
| ITF M15 Recife | 2021/09/24 18:40 | Jose Pereira v Marcelo Zormann | 7-6,6-4 |
| ITF M15 Recife | 2021/09/23 14:50 | Marcelo Zormann v Oscar Jose Gutierrez | 6-2,4-6,7-5 |