| Challenger Sao Paulo | 2022/04/17 00:00 | Hiromi Yokoyama v Roberto Tadashi Ishikawa | L | 1-3 |
| Challenger Sao Paulo | 2022/04/15 01:40 | Hiromi Yokoyama v Roberto Tadashi Ishikawa | L | 2-3 |
| Challenger Sao Paulo | 2022/04/07 22:20 | Roberto Tadashi Ishikawa v Hiromi Yokoyama | L | 3-1 |
| Challenger Sao Paulo | 2022/04/06 22:20 | Roberto Tadashi Ishikawa v Hiromi Yokoyama | L | 3-1 |
| Challenger Sao Paulo | 2022/05/13 21:00 | Hiromi Yokoyama v Marco Cruz | W | 3-0 |
| Challenger Sao Paulo | 2022/05/12 02:00 | Leandro Nogueira Carvalho v Hiromi Yokoyama | W | 2-3 |
| Challenger Sao Paulo | 2022/05/12 01:20 | Hiromi Yokoyama v Alejandro Fernandez Junior | L | 0-3 |
| Challenger Sao Paulo | 2022/05/12 00:20 | Hiromi Yokoyama v De Hong Jung | L | 2-3 |
| Challenger Sao Paulo | 2022/05/11 23:40 | Marco Cruz v Hiromi Yokoyama | W | 0-3 |
| Challenger Sao Paulo | 2022/05/11 23:00 | Hiromi Yokoyama v Fabio Mizutani | L | 2-3 |
| Challenger Sao Paulo | 2022/05/11 22:40 | Guilherme Mattos v Hiromi Yokoyama | L | 3-0 |
| Challenger Sao Paulo | 2022/05/11 21:40 | Hiromi Yokoyama v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/05/13 21:20 | Jefferson Silva v Roberto Tadashi Ishikawa | W | 1-3 |
| Challenger Sao Paulo | 2022/05/13 02:20 | Vitor Carlesse Martins v Roberto Tadashi Ishikawa | W | 0-3 |
| Challenger Sao Paulo | 2022/05/13 02:00 | Roberto Tadashi Ishikawa v Marcio Sasaki | L | 0-3 |
| Challenger Sao Paulo | 2022/05/13 01:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 |
| Challenger Sao Paulo | 2022/05/13 00:00 | Roberto Tadashi Ishikawa v Newton Takaki | L | 2-3 |
| Challenger Sao Paulo | 2022/05/12 23:20 | Roberto Tadashi Ishikawa v Silnei Yuta | L | 2-3 |
| Challenger Sao Paulo | 2022/05/12 22:40 | Guilherme Mattos v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/05/12 22:00 | Alejandro Fernandez Junior v Roberto Tadashi Ishikawa | L | 3-0 |