| Challenger Sao Paulo | 06/15 22:20 | - | Roberto Tadashi Ishikawa v Andre Cruz | W | 3-0 | |
| Challenger Sao Paulo | 06/15 21:20 | - | Roberto Tadashi Ishikawa v Marco Cruz | W | 3-0 | |
| Challenger Sao Paulo | 06/12 01:20 | - | Hiromi Yokoyama v Roberto Tadashi Ishikawa | W | 0-3 | |
| Challenger Sao Paulo | 06/12 00:40 | - | Everton Vianna v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 06/12 00:00 | - | Kayque Valois v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 06/11 23:20 | - | Roberto Tadashi Ishikawa v Alejandro Fernandez Junior | L | 0-3 | |
| Challenger Sao Paulo | 06/11 22:20 | - | Marco Cruz v Roberto Tadashi Ishikawa | W | 1-3 | |
| Challenger Sao Paulo | 06/11 21:40 | - | Leonardo Arata v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 06/11 21:00 | - | Fabio Mizutani v Roberto Tadashi Ishikawa | L | 3-1 | |
| Challenger Sao Paulo | 06/11 02:00 | - | Ricardo Mendes v Roberto Tadashi Ishikawa | W | 0-3 | |
| Challenger Sao Paulo | 06/11 01:20 | - | Roberto Tadashi Ishikawa v Vinicius Girotto | W | 3-0 | |
| Challenger Sao Paulo | 06/11 00:20 | - | Roberto Tadashi Ishikawa v Jocimar Silva | W | 3-0 | |
| Challenger Sao Paulo | 06/10 23:40 | - | Julio Silva v Roberto Tadashi Ishikawa | W | 1-3 | |
| Challenger Sao Paulo | 06/10 23:00 | - | Roberto Tadashi Ishikawa v Julio Nogueira | L | 2-3 | |
| Challenger Sao Paulo | 06/10 22:40 | - | Agnaldo Silva v Roberto Tadashi Ishikawa | W | 0-3 | |
| Challenger Sao Paulo | 06/10 21:40 | - | Roberto Tadashi Ishikawa v Luciano Martins Vieira Junior | W | 3-1 | |
| Challenger Sao Paulo | 06/10 21:00 | - | Fernando Santos v Roberto Tadashi Ishikawa | W | 1-3 | |
| Challenger Sao Paulo | 06/09 02:20 | - | Alejandro Fernandez Junior v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 06/09 01:40 | - | Roberto Tadashi Ishikawa v Newton Takaki | W | 3-2 | |
| Challenger Sao Paulo | 06/09 01:00 | - | Fabio Mizutani v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 06/09 00:20 | - | Rogerio Capobianco v Roberto Tadashi Ishikawa | W | 0-3 | |
| Challenger Sao Paulo | 06/08 23:40 | - | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 | |
| Challenger Sao Paulo | 06/08 23:20 | - | Guilherme Mattos v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 06/08 22:20 | - | Roberto Tadashi Ishikawa v Kayque Valois | L | 1-3 | |
| Challenger Sao Paulo | 06/08 21:20 | - | Roberto Tadashi Ishikawa v Allan Sarmento | L | 0-3 | |
| Challenger Sao Paulo | 06/04 02:40 | - | Luciano Martins Vieira Junior v Roberto Tadashi Ishikawa | W | 0-3 | |
| Challenger Sao Paulo | 06/04 01:40 | - | Antonio Neto v Roberto Tadashi Ishikawa | W | 0-3 | |
| Challenger Sao Paulo | 06/04 01:00 | - | Roberto Tadashi Ishikawa v Julio Silva | L | 2-3 | |
| Challenger Sao Paulo | 06/04 00:20 | - | Fernando Santos v Roberto Tadashi Ishikawa | W | 0-3 | |
| Challenger Sao Paulo | 06/03 23:00 | - | Jonas Silva v Roberto Tadashi Ishikawa | W | 0-3 |