event | round | table | player one | result | player two |
Grand Prix Nagoya 2004 | 14 | 33 | Senba, Kotaro (1652) | Lost 0-2 | Ishimura, Shintaro (1644) |
Grand Prix Shizuoka 2008 | 11 | 56 | Senba, Kotaro (1697) | Lost 1-2 | Ishimura, Shintaro (1837) |
Grand Prix Sendai 2010 | 7 | 15 | Senba, Kotaro (1654) | Lost 0-2 | Ishimura, Shintaro (1935) |