| Challenger Sao Paulo | 2022/06/08 23:20 | Guilherme Mattos v Roberto Tadashi Ishikawa | W | 3-0 |
| Challenger Sao Paulo | 2022/05/12 22:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | W | 3-0 |
| 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 | 2022/06/15 22:40 | Marco Cruz v Guilherme Mattos | W | 1-3 |
| Challenger Sao Paulo | 2022/06/15 22:00 | Fabio Mizutani v Guilherme Mattos | L | 3-0 |
| Challenger Sao Paulo | 2022/06/15 21:20 | Newton Takaki v Guilherme Mattos | L | 3-0 |
| Challenger Sao Paulo | 2022/06/10 02:20 | Alejandro Fernandez Junior v Guilherme Mattos | L | 3-0 |
| Challenger Sao Paulo | 2022/06/10 01:40 | Guilherme Mattos v Fabio Mizutani | L | 1-3 |
| Challenger Sao Paulo | 2022/06/10 01:00 | Allan Sarmento v Guilherme Mattos | L | 3-0 |
| Challenger Sao Paulo | 2022/06/10 00:20 | Silnei Yuta v Guilherme Mattos | L | 3-1 |
| Challenger Sao Paulo | 2022/06/09 23:40 | Guilherme Mattos v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/06/15 22:20 | Roberto Tadashi Ishikawa v Andre Cruz | W | 3-0 |
| Challenger Sao Paulo | 2022/06/15 21:20 | Roberto Tadashi Ishikawa v Marco Cruz | W | 3-0 |
| Challenger Sao Paulo | 2022/06/12 01:20 | Hiromi Yokoyama v Roberto Tadashi Ishikawa | W | 0-3 |
| Challenger Sao Paulo | 2022/06/12 00:40 | Everton Vianna v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/06/12 00:00 | Kayque Valois v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/06/11 23:20 | Roberto Tadashi Ishikawa v Alejandro Fernandez Junior | L | 0-3 |
| Challenger Sao Paulo | 2022/06/11 22:20 | Marco Cruz v Roberto Tadashi Ishikawa | W | 1-3 |
| Challenger Sao Paulo | 2022/06/11 21:40 | Leonardo Arata v Roberto Tadashi Ishikawa | L | 3-0 |