event | round | table | player one | result | player two |
Grand Prix Nagoya 2004 | 4 | 21 | Okamoto, Jin (2026) | Lost 0-2 | Ootsuka, Koutarou (1597) |
Grand Prix Matsuyama 2005 | 5 | 24 | Okamoto, Jin (1830) | Lost 0-2 | Ootsuka, Koutarou (1751) |
Grand Prix Kobe 2009 | 9 | 35 | Okamoto, Jin (1903) | Won 2-1 | Ootsuka, Koutarou (2097) |