| 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 | 2022/05/13 01:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/05/08 02:20 | Douglas Tomioka v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/04/28 22:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/07/02 00:00 | Roberto Tadashi Ishikawa v Hiromi Yokoyama | W | 3-1 |
| Challenger Sao Paulo | 2022/07/01 23:20 | Roberto Tadashi Ishikawa v Luciano Martins Vieira Junior | W | 3-0 |
| Challenger Sao Paulo | 2022/07/01 22:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | L | 3-2 |
| Challenger Sao Paulo | 2022/07/01 22:00 | Fabio Mizutani v Roberto Tadashi Ishikawa | L | 3-1 |
| Challenger Sao Paulo | 2022/07/01 21:20 | Ricardo Martins De Brito v Roberto Tadashi Ishikawa | W | 0-3 |
| Challenger Sao Paulo | 2022/06/18 02:20 | Roberto Tadashi Ishikawa v Jose Geneci Tavares Junior | W | 3-1 |
| Challenger Sao Paulo | 2022/06/18 01:40 | Roberto Tadashi Ishikawa v Agnaldo Silva | W | 3-0 |
| Challenger Sao Paulo | 2022/06/18 00:40 | Roberto Tadashi Ishikawa v Luciano Martins Vieira Junior | W | 3-0 |
| Challenger Sao Paulo | 2022/07/02 00:40 | Ricardo Martins De Brito v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/07/01 23:40 | Luciano Martins Vieira Junior v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/07/01 23:00 | Alejandro Fernandez Junior v Douglas Tomioka | L | 3-0 |
| Challenger Sao Paulo | 2022/07/01 22:20 | Fabio Mizutani v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/07/01 21:40 | Pedro Andrade v Douglas Tomioka | W | 1-3 |
| Challenger Sao Paulo | 2022/07/01 02:00 | Andre Cruz v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/07/01 01:20 | Everton Vianna v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/07/01 00:40 | Alejandro Fernandez Junior v Douglas Tomioka | W | 2-3 |