| event | round | table | player one | result | player two |
| Grand Prix Yokohama 2004 | 6 | 14 | Oiso, Masashi (2036) | Lost 0-2 | Takagi, Takeshi (1633) |
| Grand Prix Kitakyushu 2005 | 10 | 7 | Oiso, Masashi (2177) | Won 2-0 | Takagi, Takeshi (1691) |
| Grand Prix Hiroshima 2006 | 5 | 12 | Oiso, Masashi (1874) | Won 2-1 | Takagi, Takeshi (1710) |