| event | round | table | player one | result | player two |
| Grand Prix Hiroshima 2001 | 10 | 4 | Mori, Katsuhiro (1767) | Won 2-0 | Morita, Masahiko (1586) |
| Grand Prix Shizuoka 2001 | 14 | 1 | Mori, Katsuhiro (1959) | ID | Morita, Masahiko (1727) |
| Grand Prix Taipei 2002 | 10 | 6 | Mori, Katsuhiro (1927) | Lost 0-2 | Morita, Masahiko (1883) |
| Grand Prix Taipei 2005 | 6 | 16 | Mori, Katsuhiro (2016) | Lost 1-2 | Morita, Masahiko (2035) |