| event | round | table | player one | result | player two |
| Grand Prix Kyoto 2007 | 13 | 60 | Shimizu, Naoki (1653) | Won 2-1 | Watanabe, Yuuya (1600) |
| Grand Prix Kyoto 2007 | Q | Shimizu, Naoki (1689) | Lost 0-2 | Watanabe, Yuuya (1622) | |
| Pro Tour Austin 2009 | 14 | 3 | Shimizu, Naoki (1923) | Lost 0-2 | Watanabe, Yuuya (2228) |
| Grand Prix Hiroshima 2011 | 4 | 38 | Shimizu, Naoki (1704) | Lost 0-2 | Watanabe, Yuuya (2084) |