| event | round | table | player one | result | player two |
| Grand Prix Hong Kong 2004 | 13 | 20 | Osawa, Takuya (1754) | Won 2-0 | Ikeda, Tsuyoshi (1842) |
| Grand Prix Matsuyama 2005 | 4 | 53 | Osawa, Takuya (1738) | Won 2-1 | Ikeda, Tsuyoshi (1843) |
| Grand Prix Niigata 2005 | 9 | 1 | Osawa, Takuya (1883) | Draw 1-1 | Ikeda, Tsuyoshi (1853) |
| Grand Prix Kitakyushu 2009 | 4 | 29 | Osawa, Takuya (1812) | Lost 1-2 | Ikeda, Tsuyoshi (2116) |