| Challenger Sao Paulo | 2022/04/14 02:40 | De Hong Jung v Roberto Tadashi Ishikawa | L | 3-1 |
| Challenger Sao Paulo | 2022/04/07 01:00 | Roberto Tadashi Ishikawa v De Hong Jung | L | 0-3 |
| Challenger Sao Paulo | 2022/03/23 21:20 | Roberto Tadashi Ishikawa v De Hong Jung | L | 0-3 |
| Challenger Sao Paulo | 2022/04/17 02:20 | Roberto Tadashi Ishikawa v Lennon Uehara | L | 1-3 |
| Challenger Sao Paulo | 2022/04/17 01:40 | Fabio Mizutani v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/04/17 01:00 | Vitor Pereira v Roberto Tadashi Ishikawa | L | 3-0 |
| Challenger Sao Paulo | 2022/04/17 00:20 | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 1-3 |
| Challenger Sao Paulo | 2022/04/17 00:00 | Hiromi Yokoyama v Roberto Tadashi Ishikawa | W | 1-3 |
| Challenger Sao Paulo | 2022/04/16 23:00 | Roberto Tadashi Ishikawa v Carlos Alberto Torres Ferraz | L | 0-3 |
| Challenger Sao Paulo | 2022/04/16 21:40 | Roberto Tadashi Ishikawa v Leandro Nogueira Carvalho | L | 0-3 |
| Challenger Sao Paulo | 2022/04/16 21:00 | Roberto Tadashi Ishikawa v Jonas Silva | W | 3-2 |
| Challenger Sao Paulo | 2022/04/14 02:40 | De Hong Jung v Roberto Tadashi Ishikawa | W | 3-1 |
| Challenger Sao Paulo | 2022/04/14 02:00 | De Hong Jung v Jonas Silva | W | 3-0 |
| Challenger Sao Paulo | 2022/04/14 01:00 | De Hong Jung v Fabio Mizutani | L | 1-3 |
| Challenger Sao Paulo | 2022/04/14 00:40 | De Hong Jung v Newton Takaki | W | 3-0 |
| Challenger Sao Paulo | 2022/04/13 23:40 | De Hong Jung v Carlos Alberto Torres Ferraz | W | 3-1 |
| Challenger Sao Paulo | 2022/04/13 22:40 | De Hong Jung v Vitor Carlesse Martins | W | 3-1 |
| Challenger Sao Paulo | 2022/04/13 22:00 | Marco Cruz v De Hong Jung | W | 0-3 |
| Challenger Sao Paulo | 2022/04/13 21:20 | Leandro Nogueira Carvalho v De Hong Jung | W | 2-3 |