| event | round | table | player one | result | player two |
| Grand Prix Matsuyama 2005 | 7 | 23 | Osawa, Takuya (1758) | Lost 1-2 | Yasooka, Shota (1747) |
| Grand Prix Phoenix 2006 | 11 | 26 | Osawa, Takuya (1930) | Won 2-1 | Yasooka, Shota (2081) |
| Pro Tour Yokohama 2007 | 8 | 82 | Osawa, Takuya (2057) | Draw 0-0 | Yasooka, Shota (1850) |
| Pro Tour Hollywood 2008 | 14 | 34 | Osawa, Takuya (1800) | Lost 0-2 | Yasooka, Shota (1849) |