| Challenger Sao Paulo | 2022/04/08 01:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | W | 3-1 |
| Challenger Sao Paulo | 2022/04/07 01:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | W | 3-1 |
| 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 | 2022/05/11 22:40 | Guilherme Mattos v Hiromi Yokoyama | W | 3-0 |
| Challenger Sao Paulo | 2022/05/12 22:00 | Alejandro Fernandez Junior v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/05/12 21:20 | Pedro Andrade v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/05/08 02:20 | Douglas Tomioka v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/05/08 01:40 | Roberto Tadashi Ishikawa v Alejandro Fernandez Junior | W | 3-2 |
| Challenger Sao Paulo | 2022/05/08 01:00 | Lennon Uehara v Roberto Tadashi Ishikawa | L | 3-2 |
| Challenger Sao Paulo | 2022/05/08 00:20 | Diogo Silva v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/05/07 23:40 | Roberto Tadashi Ishikawa v De Hong Jung | L | 2-3 |
| Challenger Sao Paulo | 2022/05/07 23:20 | Everton Vianna v Roberto Tadashi Ishikawa | L | 3-0 |