| Challenger São Paulo | 2022/05/26 01:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger São Paulo | 2022/05/13 01:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger São Paulo | 2022/05/08 02:20 | Douglas Tomioka v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger São Paulo | 2022/04/28 22:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger São Paulo | 2022/04/21 01:40 | Douglas Tomioka v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger São Paulo | 2022/04/17 00:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 1-3 |
| Challenger São Paulo | 2022/04/08 01:00 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 1-3 |
| Challenger São Paulo | 2022/06/03 00:00 | Roberto Tadashi Ishikawa v Rogerio Capobianco | W | 3-0 |
| Challenger São Paulo | 2022/06/02 23:20 | Roberto Tadashi Ishikawa v Newton Takaki | W | 3-1 |
| Challenger São Paulo | 2022/06/02 22:40 | Wagner Danilo v Roberto Tadashi Ishikawa | W | 1-3 |
| Challenger São Paulo | 2022/06/02 22:00 | Roberto Domingues de Andrade v Roberto Tadashi Ishikawa | W | 1-3 |
| Challenger São Paulo | 2022/06/02 21:20 | Alejandro Fernandez Junior v Roberto Tadashi Ishikawa | L | 3-1 |
| Challenger São Paulo | 2022/05/29 02:40 | Allan Sarmento v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger São Paulo | 2022/05/29 01:40 | Heins Bendezu v Roberto Tadashi Ishikawa | W | 2-3 |
| Challenger São Paulo | 2022/05/29 01:00 | Roberto Tadashi Ishikawa v Alejandro Fernandez Junior | L | 0-3 |
| Challenger São Paulo | 2022/06/03 00:40 | Alejandro Fernandez Junior v Douglas Tomioka | L | 3-1 |
| Challenger São Paulo | 2022/06/02 23:40 | Newton Takaki v Douglas Tomioka | W | 1-3 |
| Challenger São Paulo | 2022/06/02 23:00 | Fabio Mizutani v Douglas Tomioka | W | 0-3 |
| Challenger São Paulo | 2022/06/02 22:20 | Roberto Domingues de Andrade v Douglas Tomioka | W | 0-3 |
| Challenger São Paulo | 2022/06/02 21:40 | Vitor Carlesse Martins v Douglas Tomioka | W | 0-3 |
| Challenger São Paulo | 2022/06/02 02:40 | Andre Cruz v Douglas Tomioka | W | 0-3 |
| Challenger São Paulo | 2022/06/02 02:00 | Allan Sarmento v Douglas Tomioka | L | 3-0 |
| Challenger São Paulo | 2022/06/02 01:20 | Jonas Silva v Douglas Tomioka | W | 0-3 |