| event | round | table | player one | result | player two |
| Pro Tour Columbus 2004 | 14 | 1 | Szleifer, Gadiel (1866) | Lost 0-2 | Siron, Geoffrey (1958) |
| Grand Prix Phoenix 2006 | 6 | 13 | Szleifer, Gadiel (1937) | Won 2-1 | Siron, Geoffrey (1928) |
| Grand Prix Phoenix 2006 | 14 | 1 | Szleifer, Gadiel (1984) | ID | Siron, Geoffrey (1999) |
| 2007 World Championship | 15 | 81 | Szleifer, Gadiel (1674) | Lost 0-2 | Siron, Geoffrey (1827) |