event | round | table | player one | result | player two |
Grand Prix Shizuoka 2008 | 14 | 7 | Nakamura, Hajime (1611) | Lost 1-2 | Sunada, Shougo (1610) |
Grand Prix Yokohama 2010 | 12 | 20 | Nakamura, Hajime (1940) | Won 2-0 | Sunada, Shougo (1749) |
Grand Prix Kobe 2011 | 6 | 14 | Nakamura, Hajime (1815) | Won 2-0 | Sunada, Shougo (1848) |