, 4-2.
| event |
round |
table |
player one |
result |
player two |
| Grand Prix Hiroshima 2003 | 12 | 5 | Morita, Masahiko (1839) | Won 2-0 | Mihara, Makihito (1638) |
| Grand Prix Sendai 2004 | 13 | 19 | Morita, Masahiko (2075) | Won 2-0 | Mihara, Makihito (1827) |
| Grand Prix Matsuyama 2005 | 6 | 5 | Morita, Masahiko (1991) | Won 2-1 | Mihara, Makihito (1892) |
| Grand Prix Kitakyushu 2005 | 11 | 1 | Morita, Masahiko (2119) | Won 2-0 | Mihara, Makihito (1975) |
| Grand Prix Hiroshima 2006 | 8 | 80 | Morita, Masahiko (1922) | Lost 1-2 | Mihara, Makihito (1976) |
| Grand Prix Kyoto 2007 | 10 | 23 | Morita, Masahiko (2014) | Lost 1-2 | Mihara, Makihito (2165) |