Stadium: Quadra 3 Round: 27 Ground: Clay
| ITF M15 Sao Paulo | 2023/08/24 19:15 | Eduardo Ribeiro v Joao Vitor Goncalves Ceolin | 7-5,6-3 |
| ITF M15 Sao Paulo | 2023/08/23 17:50 | Eduardo Ribeiro v Luis F F S Carvalho | 6-2,6-3 |
| Challenger Santo Domingo | 2023/08/09 18:15 | Felipe Meligeni Rodrigues Alves v Eduardo Ribeiro | 6-4,7-6 |
| ATP Los Cabos | 2023/07/30 01:00 | Luis Carlos Alvarez Valdes v Eduardo Ribeiro | 6-4,6-4 |
| Challenger Zug | 2023/07/24 09:00 | Eduardo Ribeiro v Tim Handel | 6-7,6-7 |
| Challenger Zug | 2023/07/23 09:00 | Eduardo Ribeiro v Nicolas Kobelt | 6-3,6-2 |
| Challenger Amersfoort | 2023/07/16 14:40 | Eduardo Ribeiro v Niels Visker | 3-6,6-7 |
| Challenger Santa Fe | 2023/07/04 16:00 | Igor Gimenez v Eduardo Ribeiro | 6-2,4-6,6-4 |
| ITF M15 Sao Paulo | 2023/08/24 13:55 | Luis Britto v Joao Eduardo Schiessl | 3-6,3-6 |
| ITF M15 Sao Paulo | 2023/08/23 15:55 | Joao Eduardo Schiessl v Joao Victor C Loureiro | 6-1,6-4 |
| ITF M15 Belem | 2023/08/18 19:00 | Rodrigo Pacheco Mendez v Joao Eduardo Schiessl | 6-2,6-3 |
| ITF M15 Belem | 2023/08/17 19:25 | Joao M Nusdeo v Joao Eduardo Schiessl | 1-6,2-6 |
| ITF M25 Esch/Alzette | 2023/07/19 15:35 | Joao Eduardo Schiessl v Samuel Brosset | 7-6,5-7,4-6 |
| ITF M25 Biella | 2023/07/06 14:00 | Joao Eduardo Schiessl v Stefano Napolitano | 1-6,3-6 |
| ITF M25 Biella | 2023/07/05 11:50 | Giorgio Tabacco v Joao Eduardo Schiessl | 6-7,6-7 |
| ITF M25 Biella | 2023/07/04 16:45 | Joao Eduardo Schiessl v Ryusuke Horiuchi | 6-0,6-3 |