| Challenger São Paulo | 2022/06/15 23:20 | Guilherme Mattos v Roberto Tadashi Ishikawa | W | 3-1 |
| Challenger São Paulo | 2022/06/08 23:20 | Guilherme Mattos v Roberto Tadashi Ishikawa | W | 3-0 |
| Challenger São Paulo | 2022/05/12 22:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | W | 3-0 |
| Challenger São Paulo | 2022/04/08 01:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | W | 3-1 |
| Challenger São Paulo | 2022/04/07 01:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | W | 3-1 |
| Challenger São Paulo | 2022/07/01 22:00 | Ricardo Martins De Brito v Guilherme Mattos | W | 1-3 |
| Challenger São Paulo | 2022/07/01 21:20 | Luciano Martins Vieira Junior v Guilherme Mattos | W | 0-3 |
| Challenger São Paulo | 2022/07/01 02:40 | Andre Cruz v Guilherme Mattos | W | 1-3 |
| Challenger São Paulo | 2022/07/01 01:40 | Alejandro Fernandez Junior v Guilherme Mattos | L | 3-0 |
| Challenger São Paulo | 2022/07/01 01:00 | Guilherme Mattos v Pedro Andrade | L | 1-3 |
| Challenger São Paulo | 2022/07/01 00:20 | Fabio Mizutani v Guilherme Mattos | L | 3-1 |
| Challenger São Paulo | 2022/06/30 23:00 | Hiromi Yokoyama v Guilherme Mattos | W | 2-3 |
| Challenger São Paulo | 2022/06/30 22:20 | Guilherme Mattos v Douglas Tomioka | L | 0-3 |
| Challenger São Paulo | 2022/07/01 22:00 | Fabio Mizutani v Roberto Tadashi Ishikawa | L | 3-1 |
| Challenger São Paulo | 2022/07/01 21:20 | Ricardo Martins De Brito v Roberto Tadashi Ishikawa | W | 0-3 |
| Challenger São Paulo | 2022/06/18 02:20 | Roberto Tadashi Ishikawa v Jose Geneci Tavares Junior | W | 3-1 |
| Challenger São Paulo | 2022/06/18 01:40 | Roberto Tadashi Ishikawa v Agnaldo Silva | W | 3-0 |
| Challenger São Paulo | 2022/06/18 00:40 | Roberto Tadashi Ishikawa v Luciano Martins Vieira Junior | W | 3-0 |
| Challenger São Paulo | 2022/06/18 00:00 | Roberto Tadashi Ishikawa v Fernando Santos | W | 3-0 |
| Challenger São Paulo | 2022/06/17 23:20 | Antonio Neto v Roberto Tadashi Ishikawa | W | 2-3 |
| Challenger São Paulo | 2022/06/17 22:40 | Roberto Tadashi Ishikawa v Julio Silva | W | 3-2 |