| 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 |
| Challenger Sao Paulo | 2022/07/07 22:40 | Alejandro Fernandez Junior v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/07/07 21:40 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/07/07 21:00 | Marco Cruz v Roberto Tadashi Ishikawa | W | 1-3 |
| Challenger Sao Paulo | 2022/07/03 02:20 | Roberto Tadashi Ishikawa v Fernando Santos | W | 3-0 |
| Challenger Sao Paulo | 2022/07/03 01:40 | Roberto Tadashi Ishikawa v Antonio Neto | W | 3-0 |
| Challenger Sao Paulo | 2022/07/03 00:40 | Roberto Tadashi Ishikawa v Luciano Martins Vieira Junior | W | 3-0 |
| Challenger Sao Paulo | 2022/07/03 00:00 | Roberto Tadashi Ishikawa v Jose Geneci Tavares Junior | W | 3-0 |
| Challenger Sao Paulo | 2022/07/02 23:20 | Jocimar Silva v Roberto Tadashi Ishikawa | W | 0-3 |
| Challenger Sao Paulo | 2022/07/07 22:20 | Guilherme Mattos v Douglas Tomioka | L | 1-3 |
| Challenger Sao Paulo | 2022/07/07 22:00 | Guilherme Mattos v Everton Vianna | W | 3-1 |
| Challenger Sao Paulo | 2022/07/07 21:00 | Guilherme Mattos v Daniel Lacerda | W | 3-0 |
| Challenger Sao Paulo | 2022/07/07 02:00 | Alejandro Fernandez Junior v Guilherme Mattos | L | 3-0 |
| Challenger Sao Paulo | 2022/07/07 01:20 | Guilherme Mattos v Rogerio Capobianco | W | 3-1 |
| Challenger Sao Paulo | 2022/07/06 23:00 | Guilherme Mattos v Marco Cruz | W | 3-0 |
| Challenger Sao Paulo | 2022/07/06 21:40 | Guilherme Mattos v Douglas Tomioka | L | 2-3 |
| Challenger Sao Paulo | 2022/07/06 21:00 | Valter Mukaibata v Guilherme Mattos | W | 0-3 |