Stadium: Quadra 1 Round: 14 Ground: Clay
| ITF M25 Lajeado | 2023/10/12 14:00 | Ezequiel Simonit v Nicolas Zanellato | 6-4,6-3 |
| Challenger Campinas | 2023/10/03 15:10 | Roman Andres Burruchaga v Nicolas Zanellato | 4-6,6-4,6-2 |
| Challenger Bogota | 2023/09/24 16:00 | Nicolas Zanellato v Juan Sebastian Osorio | 4-6,1-6 |
| ITF M25 Maribor | 2023/09/08 10:20 | Nicolas Zanellato v Mathys Erhard | 1-6,7-6,6-7 |
| ITF M25 Maribor | 2023/09/07 10:05 | Nicolas Zanellato v Mili Poljicak | 4-6,6-3,6-4 |
| ITF M25 Maribor | 2023/09/06 12:25 | Nicolas Zanellato v Stefano D'Agostino | 4-6,6-0,6-2 |
| ITF M25 Maribor | 2023/09/03 08:00 | Michael Vrbensky v Nicolas Zanellato | 6-3,6-4 |
| ITF M25 Maribor | 2023/09/02 08:00 | Kirill Kivattsev v Nicolas Zanellato | 2-6,7-5,6-7 |
| ITF M25 Lajeado | 2023/10/13 14:00 | Wilson Leite v Paulo A S Dos Santos | 7-6,6-4 |
| ITF M25 Lajeado | 2023/10/11 22:15 | Paulo A S Dos Santos v Bruno Fernandez | 6-3,2-6,6-1 |
| Challenger Campinas | 2023/10/02 13:00 | Daniel Dutra Da Silva v Paulo A S Dos Santos | 6-4,7-5 |
| Challenger Campinas | 2023/10/01 13:00 | Paulo A S Dos Santos v Gilbert S K Junior | 2-6,6-4,6-4 |
| ITF M15 Sao Paulo | 2023/08/21 14:00 | Paulo A S Dos Santos v Julian Cundom | 6-7,6-7 |
| ITF M15 Belem | 2023/08/17 17:00 | Paulo A S Dos Santos v Ignacio A B Otarola | 5-7,3-6 |
| ITF M15 Belem | 2023/08/16 17:00 | Julian Cundom v Paulo A S Dos Santos | 6-7,5-7 |
| ITF M25 Pitesti | 2023/08/01 09:30 | Paulo A S Dos Santos v Vlad Andrei Dancu | 4-6,6-7 |