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