| Challenger Sao Paulo | 2022/04/17 00:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | W | 1-3 |
| Challenger Sao Paulo | 2022/04/08 01:00 | Roberto Tadashi Ishikawa v Douglas Tomioka | W | 1-3 |
| Challenger Sao Paulo | 2022/04/21 00:40 | Douglas Tomioka v Rodrigo Procidonio Ruiz | W | 3-1 |
| Challenger Sao Paulo | 2022/04/21 00:00 | Douglas Tomioka v Alejandro Fernandez Junior | L | 1-3 |
| Challenger Sao Paulo | 2022/04/20 23:20 | De Hong Jung v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/04/20 22:40 | Douglas Tomioka v Carlos Alberto Torres Ferraz | W | 3-0 |
| Challenger Sao Paulo | 2022/04/20 22:00 | Douglas Tomioka v Fabio Mizutani | L | 2-3 |
| Challenger Sao Paulo | 2022/04/20 21:20 | Douglas Tomioka v Leandro Nogueira Carvalho | W | 3-0 |
| Challenger Sao Paulo | 2022/04/17 02:40 | Vitor Pereira v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/04/17 01:40 | Hiromi Yokoyama v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/04/21 01:00 | Roberto Tadashi Ishikawa v Newton Takaki | L | 1-3 |
| Challenger Sao Paulo | 2022/04/21 00:20 | Alejandro Fernandez Junior v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/04/20 23:00 | Carlos Alberto Torres Ferraz v Roberto Tadashi Ishikawa | W | 2-3 |
| Challenger Sao Paulo | 2022/04/20 22:20 | Roberto Tadashi Ishikawa v Rodrigo Procidonio Ruiz | L | 0-3 |
| Challenger Sao Paulo | 2022/04/20 22:00 | Roberto Tadashi Ishikawa v Leandro Nogueira Carvalho | L | 2-3 |
| Challenger Sao Paulo | 2022/04/20 21:00 | Roberto Tadashi Ishikawa v De Hong Jung | W | 3-2 |
| Challenger Sao Paulo | 2022/04/17 02:20 | Roberto Tadashi Ishikawa v Lennon Uehara | L | 1-3 |
| Challenger Sao Paulo | 2022/04/17 01:40 | Fabio Mizutani v Roberto Tadashi Ishikawa | L | 3-0 |