Stadium: Centre Court Round: 26 Ground: Clay
| ITF M15 Brasilia | 2021/11/03 22:35 | Joao Lucas Reis da Silva v Marcelo Zormann | 6-7,6-7 |
| 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 Brasilia | 2021/11/03 16:50 | Bryan Aguiar Kuntz v Fernando Yamacita | 3-6,2-6 |
| ITF M15 Cancun | 2021/10/12 15:30 | Alexander Bernard v Fernando Yamacita | 7-6,6-2 |
| ITF M15 Cancun | 2021/10/05 14:00 | Fernando Yamacita v Federico Agustin Gomez | 3-6,6-2,10-12 |
| ITF M15 Cancun | 2021/10/04 14:00 | Fernando Yamacita v Pietro Mugelli | 6-4,6-0 |
| ITF M15 Cancun | 2021/10/03 15:30 | Fernando Yamacita v Babji Siva Atturu | 6-4,6-0 |
| ITF M15 Cancun | 2021/09/26 15:00 | Fernando Yamacita v Emil Reinberg | 3-6,4-6 |
| ITF M15 Cancun | 2021/09/23 14:00 | Fernando Yamacita v Jaimee Floyd Angele | 1-6,4-6 |
| ITF M15 Cancun | 2021/09/22 14:00 | Emil Reinberg v Fernando Yamacita | 6-4,5-7,3-6 |