| event | round | table | player one | result | player two |
| Grand Prix Singapore 2005 | 12 | 28 | Ogura, Ryou (1727) | Lost 0-2 | Tsumura, Kenji (1647) |
| Grand Prix Matsuyama 2005 | 7 | 12 | Ogura, Ryou (1688) | Lost 1-2 | Tsumura, Kenji (1835) |
| Grand Prix Niigata 2005 | 4 | 1 | Ogura, Ryou (1747) | Draw 1-1 | Tsumura, Kenji (1842) |
| Grand Prix Taipei 2005 | 11 | 14 | Ogura, Ryou (1735) | Won 2-1 | Tsumura, Kenji (1918) |
| Grand Prix Kitakyushu 2007 | 13 | 27 | Ogura, Ryou (1972) | Lost 1-2 | Tsumura, Kenji (1933) |