| Challenger Sao Paulo | 2022/07/20 21:00 | Roberto Tadashi Ishikawa v Guilherme Mattos | L | 0-3 |
| Challenger Sao Paulo | 2022/07/09 21:00 | Roberto Tadashi Ishikawa v Guilherme Mattos | L | 2-3 |
| Challenger Sao Paulo | 2022/07/01 22:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | L | 3-2 |
| Challenger Sao Paulo | 2022/06/15 23:20 | Guilherme Mattos v Roberto Tadashi Ishikawa | L | 3-1 |
| Challenger Sao Paulo | 2022/06/08 23:20 | Guilherme Mattos v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/05/12 22:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/04/08 01:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | L | 3-1 |
| Challenger Sao Paulo | 2022/04/07 01:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | L | 3-1 |