| 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 | 2022/04/21 01:40 | Douglas Tomioka v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/06/15 23:20 | Guilherme Mattos v Roberto Tadashi Ishikawa | L | 3-1 |
| Challenger Sao Paulo | 2022/06/15 22:20 | Roberto Tadashi Ishikawa v Andre Cruz | W | 3-0 |
| Challenger Sao Paulo | 2022/06/15 21:20 | Roberto Tadashi Ishikawa v Marco Cruz | W | 3-0 |
| Challenger Sao Paulo | 2022/06/12 01:20 | Hiromi Yokoyama v Roberto Tadashi Ishikawa | W | 0-3 |
| Challenger Sao Paulo | 2022/06/12 00:40 | Everton Vianna v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/06/12 00:00 | Kayque Valois v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/06/11 23:20 | Roberto Tadashi Ishikawa v Alejandro Fernandez Junior | L | 0-3 |
| Challenger Sao Paulo | 2022/06/11 22:20 | Marco Cruz v Roberto Tadashi Ishikawa | W | 1-3 |
| Challenger Sao Paulo | 2022/06/15 23:00 | Alejandro Fernandez Junior v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/06/15 22:20 | Fabio Mizutani v Douglas Tomioka | W | 2-3 |
| Challenger Sao Paulo | 2022/06/15 21:40 | Rogerio Capobianco v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/06/10 02:40 | Marcio Sasaki v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/06/10 02:00 | Vitor Carlesse Martins v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/06/10 01:20 | Everton Vianna v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/06/10 00:40 | Alejandro Fernandez Junior v Douglas Tomioka | W | 2-3 |
| Challenger Sao Paulo | 2022/06/09 23:40 | Guilherme Mattos v Douglas Tomioka | W | 0-3 |