| event | round | table | player one | result | player two |
| Grand Prix Kitakyushu 2007 | 13 | 22 | Mihara, Makihito (2127) | Won 2-1 | Nakajima, Chikara (1752) |
| Grand Prix Kobe 2008 | 14 | 20 | Mihara, Makihito (2109) | Won 2-0 | Nakajima, Chikara (1633) |
| Grand Prix Manila 2008 | 10 | 2 | Mihara, Makihito (2119) | Lost 1-2 | Nakajima, Chikara (1678) |
| Grand Prix Okayama 2008 | 7 | 87 | Mihara, Makihito (2048) | Won 2-0 | Nakajima, Chikara (1724) |
| Grand Prix Bangkok 2009 | 5 | 29 | Mihara, Makihito (1860) | Lost 1-2 | Nakajima, Chikara (1800) |