Stadium: Centre Court Round: 54 Ground: Clay
| ITF M25 Rio do Sul | 2021/10/20 17:05 | Pedro Boscardin Dias v Gabriel Roveri Sidney | 6-4,6-2 |
| ITF M15 Cancun | 2021/10/03 19:45 | Emil Reinberg v Gabriel Roveri Sidney | 7-6,7-5 |
| ITF M15 Cancun | 2021/09/28 14:00 | Gabriel Roveri Sidney v Colin Markes | 1-6,4-6 |
| ITF M15 Cancun | 2021/09/27 14:30 | Adam Jones v Gabriel Roveri Sidney | 2-6,2-6 |
| ITF M15 Cancun | 2021/09/26 17:30 | Oscar Matias Leiva Biason v Gabriel Roveri Sidney | 1-6,2-6 |
| ITF M15 Cairo | 2021/09/14 06:55 | Bruno P Navarro v Gabriel Roveri Sidney | 6-4,4-6,10-8 |
| ITF M15 Cairo | 2021/09/13 07:00 | Gabriel Roveri Sidney v Lukas H Lilleengen | 6-3,6-7,10-8 |
| ITF M15 Cairo | 2021/09/12 11:00 | Bryan Aguiar Kuntz v Gabriel Roveri Sidney | 1-6,4-6 |
| ITF M25 Rio do Sul | 2021/10/17 12:00 | Joao Giannella v Pedro Cressoni | 2-6,6-3,9-11 |
| ITF M15 Recife | 2021/09/21 14:30 | Jose Pereira v Joao Giannella | 6-0,6-3 |
| ITF M15 Sao Paulo | 2019/10/14 14:00 | Marcio Eduardo Silva v Joao Giannella | 6-1,6-2 |
| ITF M25 Rio de Janeiro | 2019/10/08 15:35 | Andre Miele v Joao Giannella | 6-1,6-1 |
| ITF M25 Rio de Janeiro | 2019/10/07 14:00 | Joao Giannella v Luis Britto | 6-1,6-2 |
| ITF M15 Curitiba | 2019/06/25 14:35 | Oscar Gabriel Ortiz v Joao Giannella | 6-3,6-0 |
| ITF M15 Curitiba | 2019/06/24 18:45 | Felipe Muzzi v Joao Giannella | 3-6,6-7 |
| ITF M15 Sao JDR Preto | 2019/06/18 12:30 | Gabriel Ciro Da Silva v Joao Giannella | 6-1,6-0 |