| event | round | table | player one | result | player two |
| Grand Prix Sapporo 2000 | 12 | 7 | Mori, Katsuhiro (1571) | Won 2-0 | Harada, Hiroshi (1552) |
| Grand Prix Sendai 2001 | 10 | 21 | Mori, Katsuhiro (1921) | Won 2-0 | Harada, Hiroshi (1670) |
| Grand Prix Sapporo 2002 | 8 | 36 | Mori, Katsuhiro (1886) | Won 2-1 | Harada, Hiroshi (1606) |
| Grand Prix Hiroshima 2003 | 8 | 20 | Mori, Katsuhiro (1876) | Won 2-0 | Harada, Hiroshi (1560) |