| event | round | table | player one | result | player two |
| Grand Prix Singapore 2005 | 6 | 49 | Kaji, Tomohiro (1885) | Won 2-1 | Nakamura, Shuhei (1952) |
| Grand Prix Kitakyushu 2005 | 6 | 13 | Kaji, Tomohiro (1848) | Won 2-1 | Nakamura, Shuhei (1972) |
| 2005 World Championship | 5 | 3 | Kaji, Tomohiro (1989) | Won 2-0 | Nakamura, Shuhei (1957) |
| 2005 World Championship | 18 | 2 | Kaji, Tomohiro (2098) | ID | Nakamura, Shuhei (2031) |
| Grand Prix Hiroshima 2006 | 5 | 82 | Kaji, Tomohiro (1927) | Won 2-1 | Nakamura, Shuhei (2122) |