| Challenger Sao Paulo | 08/25 02:40 | - | Roberto Tadashi Ishikawa v Rodrigo Procidonio Ruiz | L | 1-3 | |
| Challenger Sao Paulo | 08/25 02:00 | - | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 | |
| Challenger Sao Paulo | 08/25 01:00 | - | Roberto Tadashi Ishikawa v Everton Vianna | L | 0-3 | |
| Challenger Sao Paulo | 08/25 00:40 | - | Roberto Tadashi Ishikawa v Vitor Carlesse Martins | L | 0-3 | |
| Challenger Sao Paulo | 08/24 23:40 | - | Roberto Tadashi Ishikawa v Marco Cruz | W | 3-1 | |
| Challenger Sao Paulo | 08/24 22:40 | - | Roberto Tadashi Ishikawa v Alejandro Fernandez Junior | L | 0-3 | |
| Challenger Sao Paulo | 08/24 22:00 | - | Newton Takaki v Roberto Tadashi Ishikawa | W | 2-3 | |
| Challenger Sao Paulo | 08/24 21:20 | - | Fabio Mizutani v Roberto Tadashi Ishikawa | L | 3-1 | |
| Challenger Sao Paulo | 08/21 02:40 | - | Roberto Tadashi Ishikawa v Luciano Pinto | L | 0-3 | |
| Challenger Sao Paulo | 08/21 01:20 | - | Pedro Andrade v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 08/21 00:40 | - | Marco Cruz v Roberto Tadashi Ishikawa | W | 1-3 | |
| Challenger Sao Paulo | 08/21 00:00 | - | Alejandro Fernandez Junior v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 08/20 23:20 | - | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 1-3 | |
| Challenger Sao Paulo | 08/20 22:20 | - | Daniel Lacerda v Roberto Tadashi Ishikawa | W | 1-3 | |
| Challenger Sao Paulo | 08/20 21:40 | - | Everton Vianna v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 08/20 21:00 | - | Carlos Alberto Torres Ferraz v Roberto Tadashi Ishikawa | W | 1-3 | |
| Challenger Sao Paulo | 08/18 02:40 | - | Roberto Tadashi Ishikawa v Carlos Alberto Torres Ferraz | L | 1-3 | |
| Challenger Sao Paulo | 08/18 02:00 | - | Roberto Tadashi Ishikawa v Douglas Tomioka | L | 0-3 | |
| Challenger Sao Paulo | 08/18 01:00 | - | Roberto Tadashi Ishikawa v Everton Vianna | L | 1-3 | |
| Challenger Sao Paulo | 08/18 00:40 | - | Roberto Tadashi Ishikawa v Pedro Andrade | L | 0-3 | |
| Challenger Sao Paulo | 08/17 23:40 | - | Roberto Tadashi Ishikawa v Lennon Uehara | W | 3-2 | |
| Challenger Sao Paulo | 08/17 22:40 | - | Roberto Tadashi Ishikawa v Alejandro Fernandez Junior | L | 1-3 | |
| Challenger Sao Paulo | 08/17 22:00 | - | Newton Takaki v Roberto Tadashi Ishikawa | W | 1-3 | |
| Challenger Sao Paulo | 08/17 21:20 | - | Fabio Mizutani v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 08/12 02:40 | - | Roberto Tadashi Ishikawa v Pedro Andrade | W | 3-1 | |
| Challenger Sao Paulo | 08/12 02:00 | - | Roberto Tadashi Ishikawa v Wagner Danilo | W | 3-0 | |
| Challenger Sao Paulo | 08/12 01:00 | - | Roberto Tadashi Ishikawa v Everton Vianna | L | 0-3 | |
| Challenger Sao Paulo | 08/12 00:40 | - | Roberto Tadashi Ishikawa v Allan Sarmento | L | 0-3 | |
| Challenger Sao Paulo | 08/11 23:40 | - | Roberto Tadashi Ishikawa v Lennon Uehara | L | 2-3 | |
| Challenger Sao Paulo | 08/11 22:40 | - | Roberto Tadashi Ishikawa v Alejandro Fernandez Junior | L | 0-3 |