| event | round | table | player one | result | player two |
| Grand Prix London 2001 | S | Summersberger, Helmut (1813) | Lost 0-2 | Nassif, Gabriel (1756) | |
| 2003 European Championship | 14 | 4 | Summersberger, Helmut (1852) | Lost 1-2 | Nassif, Gabriel (2018) |
| Grand Prix Lille 2005 | 15 | 2 | Summersberger, Helmut (1929) | Draw 1-1 | Nassif, Gabriel (1890) |
| Pro Tour Philadelphia 2011 | 2 | 103 | Summersberger, Helmut (2002) | Won 2-0 | Nassif, Gabriel (2070) |