| 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 | 2022/05/13 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 | 2022/07/07 21:00 | Marco Cruz v Roberto Tadashi Ishikawa | W | 1-3 |
| Challenger Sao Paulo | 2022/07/03 02:20 | Roberto Tadashi Ishikawa v Fernando Santos | W | 3-0 |
| Challenger Sao Paulo | 2022/07/03 01:40 | Roberto Tadashi Ishikawa v Antonio Neto | W | 3-0 |
| Challenger Sao Paulo | 2022/07/03 00:40 | Roberto Tadashi Ishikawa v Luciano Martins Vieira Junior | W | 3-0 |
| Challenger Sao Paulo | 2022/07/03 00:00 | Roberto Tadashi Ishikawa v Jose Geneci Tavares Junior | W | 3-0 |
| Challenger Sao Paulo | 2022/07/02 23:20 | Jocimar Silva v Roberto Tadashi Ishikawa | W | 0-3 |
| Challenger Sao Paulo | 2022/07/02 22:40 | Roberto Tadashi Ishikawa v Ricardo Mendes | W | 3-1 |
| Challenger Sao Paulo | 2022/07/02 22:00 | Roberto Tadashi Ishikawa v Julio Silva | L | 0-3 |
| Challenger Sao Paulo | 2022/07/07 02:40 | Rogerio Capobianco v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/07/07 02:00 | Fabio Mizutani v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/07/07 01:20 | Alejandro Fernandez Junior v Douglas Tomioka | L | 3-0 |
| Challenger Sao Paulo | 2022/07/07 00:40 | Everton Vianna v Douglas Tomioka | W | 1-3 |
| Challenger Sao Paulo | 2022/07/06 23:40 | Newton Takaki v Douglas Tomioka | W | 1-3 |
| Challenger Sao Paulo | 2022/07/06 23:00 | Valter Mukaibata v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/07/06 22:20 | Marco Cruz v Douglas Tomioka | W | 0-3 |
| Challenger Sao Paulo | 2022/07/06 21:40 | Guilherme Mattos v Douglas Tomioka | W | 2-3 |