| Challenger Sao Paulo | 2022/04/08 01:00 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 1-3 |
| Challenger Sao Paulo | 2022/04/17 00:00 | Hiromi Yokoyama v Roberto Tadashi Ishikawa | W | 1-3 |
| Challenger Sao Paulo | 2022/04/16 23:00 | Roberto Tadashi Ishikawa v Carlos Alberto Torres Ferraz | L | 0-3 |
| Challenger Sao Paulo | 2022/04/16 21:40 | Roberto Tadashi Ishikawa v Leandro Nogueira Carvalho | L | 0-3 |
| Challenger Sao Paulo | 2022/04/16 21:00 | Roberto Tadashi Ishikawa v Jonas Silva | W | 3-2 |
| Challenger Sao Paulo | 2022/04/15 02:40 | Sandro Motta v Roberto Tadashi Ishikawa | W | 0-3 |
| Challenger Sao Paulo | 2022/04/15 01:40 | Hiromi Yokoyama v Roberto Tadashi Ishikawa | W | 2-3 |
| Challenger Sao Paulo | 2022/04/15 01:00 | Roberto Tadashi Ishikawa v Leandro Nogueira Carvalho | L | 2-3 |
| Challenger Sao Paulo | 2022/04/15 00:20 | Fabio Mizutani v Roberto Tadashi Ishikawa | L | 3-1 |
| Challenger Sao Paulo | 2022/04/16 23:00 | Jonas Silva v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/04/16 22:20 | Douglas Tomioka v Carlos Alberto Torres Ferraz | W | 3-2 |
| Challenger Sao Paulo | 2022/04/16 22:00 | Douglas Tomioka v Lennon Uehara | W | 3-1 |
| Challenger Sao Paulo | 2022/04/16 21:00 | Douglas Tomioka v Leandro Nogueira Carvalho | W | 3-0 |
| Challenger Sao Paulo | 2022/04/10 02:20 | Douglas Tomioka v Gustavo Jeremias Morais | W | 3-0 |
| Challenger Sao Paulo | 2022/04/10 01:40 | Douglas Tomioka v Alejandro Fernandez Junior | W | 3-1 |
| Challenger Sao Paulo | 2022/04/10 00:40 | Douglas Tomioka v Lennon Uehara | W | 3-1 |
| Challenger Sao Paulo | 2022/04/10 00:00 | Douglas Tomioka v Heins Bendezu | W | 3-1 |