| Challenger Sao Paulo | 2022/03/11 01:20 | Rafael Nakamura v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/03/11 00:20 | Alejandro Fernandez Junior v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/03/10 23:40 | Vitor Carlesse Martins v Roberto Tadashi Ishikawa | W | 1-3 |
| Challenger Sao Paulo | 2022/03/10 23:00 | Roberto Tadashi Ishikawa v Thiago Vieira | L | 0-3 |
| Challenger Sao Paulo | 2022/03/10 22:40 | Roberto Tadashi Ishikawa v Manuel Freitas Chambel Paiva | L | 1-3 |
| Challenger Sao Paulo | 2022/03/10 22:00 | Roberto Tadashi Ishikawa v Ricardo Martins De Brito | W | 3-1 |
| Challenger Sao Paulo | 2022/03/10 21:20 | Rodrigo Procidonio Ruiz v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/03/09 01:00 | Alan Santos v Roberto Tadashi Ishikawa | L | 3-1 |