| event | round | table | player one | result | player two |
| Grand Prix Kyoto 2007 | 5 | 5 | Watanabe, Yuuya (1521) | Won 2-1 | Sugaya, Hironobu (1504) |
| Grand Prix Kobe 2008 | 14 | 25 | Watanabe, Yuuya (1929) | Lost 0-2 | Sugaya, Hironobu (1621) |
| Grand Prix Manila 2012 | 7 | 6 | Watanabe, Yuuya (2199) | Lost 0-2 | Sugaya, Hironobu (1762) |