| event | round | table | player one | result | player two |
| Grand Prix Nagoya 2004 | 6 | 91 | Imagawa, Hiromasa (1562) | Won 2-0 | Ootsuka, Koutarou (1604) |
| Grand Prix Shizuoka 2008 | 16 | 25 | Imagawa, Hiromasa (1716) | ID | Ootsuka, Koutarou (1985) |
| Grand Prix Kobe 2012 | 14 | 65 | Imagawa, Hiromasa (1768) | Won 2-1 | Ootsuka, Koutarou (1919) |