| Challenger Sao Paulo | 2022/07/10 01:00 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/07/07 21:40 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/07/02 01:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/06/15 23:40 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/06/08 23:40 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/06/03 22:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/06/03 01:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/05/26 01:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/07/20 21:40 | Roberto Tadashi Ishikawa v Allan Sarmento | L | 0-3 |
| Challenger Sao Paulo | 2022/07/20 21:00 | Roberto Tadashi Ishikawa v Guilherme Mattos | L | 0-3 |
| Challenger Sao Paulo | 2022/07/17 02:40 | Allan Sarmento v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/07/17 02:00 | Everton Vianna v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/07/17 01:20 | Pedro Andrade v Roberto Tadashi Ishikawa | W | 1-3 |
| Challenger Sao Paulo | 2022/07/17 00:40 | Kayque Valois v Roberto Tadashi Ishikawa | L | 3-2 |
| Challenger Sao Paulo | 2022/07/16 23:40 | Alejandro Fernandez Junior v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/07/16 23:00 | Fabio Mizutani v Roberto Tadashi Ishikawa | L | 3-1 |
| Challenger Sao Paulo | 2022/07/20 22:20 | Marco Cruz v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/07/20 21:40 | Guilherme Mattos v Douglas Tomioka | W | 1-3 |
| Challenger Sao Paulo | 2022/07/15 02:40 | Allan Sarmento v Douglas Tomioka | L | 3-2 |
| Challenger Sao Paulo | 2022/07/15 02:00 | Andre Cruz v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/07/15 01:20 | Everton Vianna v Douglas Tomioka | W | 1-3 |
| Challenger Sao Paulo | 2022/07/15 00:40 | Alejandro Fernandez Junior v Douglas Tomioka | L | 3-0 |
| Challenger Sao Paulo | 2022/07/14 23:40 | Pedro Andrade v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/07/14 23:00 | Fabio Mizutani v Douglas Tomioka | W | 2-3 |