| Challenger Sao Paulo | 2022/04/21 01:40 | Douglas Tomioka v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/04/17 00:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 1-3 |
| Challenger Sao Paulo | 2022/04/08 01:00 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 1-3 |
| Challenger Sao Paulo | 2022/04/28 22:00 | Roberto Tadashi Ishikawa v Sandro Motta | L | 2-3 |
| Challenger Sao Paulo | 2022/04/28 21:00 | Roberto Tadashi Ishikawa v Pedro Andrade | L | 1-3 |
| Challenger Sao Paulo | 2022/04/28 02:40 | Roberto Tadashi Ishikawa v Carlos Alberto Torres Ferraz | L | 0-3 |
| Challenger Sao Paulo | 2022/04/28 01:20 | Leandro Nogueira Carvalho v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/04/28 00:40 | Jonas Silva v Roberto Tadashi Ishikawa | W | 2-3 |
| Challenger Sao Paulo | 2022/04/28 00:00 | Rodrigo Procidonio Ruiz v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/04/27 23:20 | Roberto Tadashi Ishikawa v Alejandro Fernandez Junior | L | 1-3 |
| Challenger Sao Paulo | 2022/04/27 22:20 | De Hong Jung v Roberto Tadashi Ishikawa | L | 3-1 |
| Challenger Sao Paulo | 2022/04/28 21:40 | Jonas Silva v Douglas Tomioka | W | 1-3 |
| Challenger Sao Paulo | 2022/04/22 02:20 | Douglas Tomioka v Ricardo Martins De Brito | W | 3-0 |
| Challenger Sao Paulo | 2022/04/22 01:40 | Douglas Tomioka v Carlos Alberto Torres Ferraz | W | 3-0 |
| Challenger Sao Paulo | 2022/04/22 00:40 | Douglas Tomioka v Fabio Mizutani | W | 3-0 |
| Challenger Sao Paulo | 2022/04/22 00:00 | Douglas Tomioka v Alejandro Fernandez Junior | W | 3-1 |
| Challenger Sao Paulo | 2022/04/21 23:20 | Roberto Domingues de Andrade v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/04/21 22:40 | Douglas Tomioka v Jonas Silva | W | 3-1 |
| Challenger Sao Paulo | 2022/04/21 22:00 | Douglas Tomioka v Lennon Uehara | W | 3-0 |