| Challenger Sao Paulo | 2022/07/02 02:40 | Guilherme Mattos v Fabio Mizutani | L | 1-3 |
| Challenger Sao Paulo | 2022/07/02 02:00 | Guilherme Mattos v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/07/02 01:00 | Guilherme Mattos v Alejandro Fernandez Junior | W | 3-0 |
| Challenger Sao Paulo | 2022/07/02 00:40 | Guilherme Mattos v Hiromi Yokoyama | W | 3-2 |
| Challenger Sao Paulo | 2022/07/01 23:40 | Guilherme Mattos v Pedro Andrade | W | 3-1 |
| Challenger Sao Paulo | 2022/07/01 22:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | W | 3-2 |
| Challenger Sao Paulo | 2022/07/01 22:00 | Ricardo Martins De Brito v Guilherme Mattos | W | 1-3 |
| Challenger Sao Paulo | 2022/07/01 21:20 | Luciano Martins Vieira Junior v Guilherme Mattos | W | 0-3 |