event | round | table | player one | result | player two |
Pro Tour Hollywood 2008 | 16 | 16 | Watanabe, Yuuya (1933) | Lost 0-2 | Summersberger, Helmut (1905) |
Pro Tour Austin 2009 | 4 | 16 | Watanabe, Yuuya (2198) | Draw 1-1 | Summersberger, Helmut (1947) |
Grand Prix Pittsburgh 2011 | 13 | 2 | Watanabe, Yuuya (2159) | Draw 1-1 | Summersberger, Helmut (1970) |