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