| event | round | table | player one | result | player two |
| Grand Prix Sendai 2004 | 10 | 31 | Mihara, Makihito (1812) | Lost 0-2 | Hirabayashi, Kazuya (1830) |
| Grand Prix Nagoya 2004 | 13 | 22 | Mihara, Makihito (1843) | Won 2-1 | Hirabayashi, Kazuya (2003) |
| Grand Prix Hiroshima 2006 | 4 | 27 | Mihara, Makihito (1996) | Won 2-0 | Hirabayashi, Kazuya (1876) |