| Challenger Sao Paulo | 2022/05/12 22:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | W | 3-0 |
| Challenger Sao Paulo | 2022/05/12 22:00 | Pedro Andrade v Guilherme Mattos | W | 2-3 |
| Challenger Sao Paulo | 2022/05/12 21:20 | Silnei Yuta v Guilherme Mattos | L | 3-0 |
| Challenger Sao Paulo | 2022/05/12 02:20 | Guilherme Mattos v De Hong Jung | W | 3-1 |
| Challenger Sao Paulo | 2022/05/12 01:40 | Guilherme Mattos v Fabio Mizutani | W | 3-0 |
| Challenger Sao Paulo | 2022/05/12 00:40 | Guilherme Mattos v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/05/12 00:00 | Guilherme Mattos v Jonas Silva | W | 3-2 |
| Challenger Sao Paulo | 2022/05/11 23:20 | Alejandro Fernandez Junior v Guilherme Mattos | L | 3-0 |
| Challenger Sao Paulo | 2022/05/12 23:00 | Marcio Sasaki v Alejandro Fernandez Junior | L | 0-3 |
| Challenger Sao Paulo | 2022/05/12 22:40 | Pedro Andrade v Marcio Sasaki | L | 3-1 |
| Challenger Sao Paulo | 2022/05/12 21:40 | Marcio Sasaki v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/05/12 21:00 | Vitor Carlesse Martins v Marcio Sasaki | W | 2-3 |