| 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 | 2022/06/08 22:40 | Allan Sarmento v Guilherme Mattos | L | 3-0 |
| Challenger Sao Paulo | 2022/06/08 22:00 | Fabio Mizutani v Guilherme Mattos | L | 3-0 |
| Challenger Sao Paulo | 2022/06/08 21:20 | Alejandro Fernandez Junior v Guilherme Mattos | L | 3-0 |
| Challenger Sao Paulo | 2022/05/13 02:40 | Guilherme Mattos v Alejandro Fernandez Junior | L | 1-3 |
| Challenger Sao Paulo | 2022/05/13 02:00 | Guilherme Mattos v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/05/13 01:00 | Guilherme Mattos v Vitor Carlesse Martins | W | 3-0 |
| Challenger Sao Paulo | 2022/05/13 00:40 | Guilherme Mattos v Newton Takaki | L | 1-3 |
| Challenger Sao Paulo | 2022/05/12 23:40 | Guilherme Mattos v Marcio Sasaki | W | 3-0 |
| Challenger Sao Paulo | 2022/06/08 22:20 | Roberto Tadashi Ishikawa v Kayque Valois | L | 1-3 |
| Challenger Sao Paulo | 2022/06/08 21:20 | Roberto Tadashi Ishikawa v Allan Sarmento | L | 0-3 |
| Challenger Sao Paulo | 2022/06/04 02:40 | Luciano Martins Vieira Junior v Roberto Tadashi Ishikawa | W | 0-3 |
| Challenger Sao Paulo | 2022/06/04 01:40 | Antonio Neto v Roberto Tadashi Ishikawa | W | 0-3 |
| Challenger Sao Paulo | 2022/06/04 01:00 | Roberto Tadashi Ishikawa v Julio Silva | L | 2-3 |
| Challenger Sao Paulo | 2022/06/04 00:20 | Fernando Santos v Roberto Tadashi Ishikawa | W | 0-3 |
| Challenger Sao Paulo | 2022/06/03 23:00 | Jonas Silva v Roberto Tadashi Ishikawa | W | 0-3 |
| Challenger Sao Paulo | 2022/06/03 22:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |