| event | round | table | player one | result | player two |
| Grand Prix Utsunomiya 2002 | 4 | 19 | Asahara, Akira (1788) | Lost 1-2 | Kato, Kazuki (1654) |
| Grand Prix Yokohama 2004 | 13 | 8 | Asahara, Akira (1987) | ID | Kato, Kazuki (1875) |
| Grand Prix Yokohama 2004 | S | Asahara, Akira (2021) | Lost 1-2 | Kato, Kazuki (1911) | |
| Grand Prix Matsuyama 2005 | 4 | 1 | Asahara, Akira (1918) | Won 2-0 | Kato, Kazuki (1895) |