event | round | table | player one | result | player two |
Grand Prix Sapporo 2002 | 2 | 24 | Oiso, Masashi (1521) | Won 2-1 | Takasaki, Yuichi (1500) |
Grand Prix Yokohama 2004 | 13 | 11 | Oiso, Masashi (2037) | Won 2-0 | Takasaki, Yuichi (1688) |
Grand Prix Matsuyama 2005 | 5 | 76 | Oiso, Masashi (1984) | Won 2-0 | Takasaki, Yuichi (1673) |