| Challenger Sao Paulo | 05/25 22:40 | - | Marco Cruz v Roberto Tadashi Ishikawa | W | 1-3 | |
| Challenger Sao Paulo | 05/25 22:00 | - | Rodrigo Procidonio Ruiz v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 05/25 21:20 | - | Alejandro Fernandez Junior v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 05/22 02:20 | - | Alejandro Fernandez Junior v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 05/22 02:00 | - | Roberto Tadashi Ishikawa v Leandro Nogueira Carvalho | L | 0-3 | |
| Challenger Sao Paulo | 05/22 01:20 | - | Roberto Tadashi Ishikawa v Jocimar Silva | W | 3-0 | |
| Challenger Sao Paulo | 05/22 00:00 | - | Roberto Tadashi Ishikawa v Hiromi Yokoyama | W | 3-0 | |
| Challenger Sao Paulo | 05/21 23:20 | - | Roberto Tadashi Ishikawa v Marco Cruz | W | 3-0 | |
| Challenger Sao Paulo | 05/21 22:40 | - | Everton Pontes v Roberto Tadashi Ishikawa | W | 2-3 | |
| Challenger Sao Paulo | 05/21 22:00 | - | Jonas Da Silva v Roberto Tadashi Ishikawa | W | 0-3 | |
| Challenger Sao Paulo | 05/21 21:20 | - | Jefferson Silva v Roberto Tadashi Ishikawa | W | 1-3 | |
| Challenger Sao Paulo | 05/21 02:20 | - | Julio Silva v Roberto Tadashi Ishikawa | L | 3-1 | |
| Challenger Sao Paulo | 05/21 02:00 | - | Roberto Tadashi Ishikawa v Antonio Neto | W | 3-0 | |
| Challenger Sao Paulo | 05/21 01:20 | - | Roberto Tadashi Ishikawa v Enrico Barnabe Umeki | W | 3-1 | |
| Challenger Sao Paulo | 05/21 00:00 | - | Roberto Tadashi Ishikawa v Jefferson Silva | L | 1-3 | |
| Challenger Sao Paulo | 05/20 23:20 | - | Roberto Tadashi Ishikawa v Marco Cruz | W | 3-0 | |
| Challenger Sao Paulo | 05/20 22:40 | - | Vinicius Girotto v Roberto Tadashi Ishikawa | W | 0-3 | |
| Challenger Sao Paulo | 05/20 22:00 | - | Luciano Martins Vieira Junior v Roberto Tadashi Ishikawa | W | 1-3 | |
| Challenger Sao Paulo | 05/20 21:20 | - | Geraldo Iqueuti v Roberto Tadashi Ishikawa | W | 0-3 | |
| Challenger Sao Paulo | 05/19 02:40 | - | Hiromi Yokoyama v Roberto Tadashi Ishikawa | L | 3-2 | |
| Challenger Sao Paulo | 05/19 01:20 | - | Allan Sarmento v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 05/19 00:40 | - | Rogerio Capobianco v Roberto Tadashi Ishikawa | W | 0-3 | |
| Challenger Sao Paulo | 05/18 23:40 | - | Rodrigo Procidonio Ruiz v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 05/18 23:00 | - | Fabio Mizutani v Roberto Tadashi Ishikawa | L | 3-2 | |
| Challenger Sao Paulo | 05/18 22:20 | - | Leandro Nogueira Carvalho v Roberto Tadashi Ishikawa | L | 3-0 | |
| Challenger Sao Paulo | 05/18 21:40 | - | Marco Cruz v Roberto Tadashi Ishikawa | W | 1-3 | |
| Challenger Sao Paulo | 05/14 02:20 | - | Fernando Santos v Roberto Tadashi Ishikawa | W | 0-3 | |
| Challenger Sao Paulo | 05/14 02:00 | - | Roberto Tadashi Ishikawa v Jocimar Silva | W | 3-0 | |
| Challenger Sao Paulo | 05/14 01:20 | - | Roberto Tadashi Ishikawa v Geraldo Iqueuti | W | 3-0 | |
| Challenger Sao Paulo | 05/14 00:00 | - | Roberto Tadashi Ishikawa v Marco Cruz | W | 3-0 |