| event | round | table | player one | result | player two |
| Pro Tour Yokohama 2003 | 1 | 29 | Siron, Geoffrey (1594) | Lost 0-2 | Ishida, Itaru (1890) |
| Pro Tour Nagoya 2005 | 8 | 28 | Siron, Geoffrey (1905) | Won 2-1 | Ishida, Itaru (1749) |
| Pro Tour Nagoya 2005 | 10 | 9 | Siron, Geoffrey (1898) | Won 2-0 | Ishida, Itaru (1754) |
| Pro Tour Kobe 2006 | 6 | 126 | Siron, Geoffrey (1937) | Won 2-1 | Ishida, Itaru (1925) |