event | round | table | player one | result | player two |
Grand Prix Copenhagen 2005 | 9 | 16 | Summersberger, Helmut (1723) | Won 2-1 | Marciniszyn, Michal (1781) |
Grand Prix Krakow 2007 | 14 | 52 | Summersberger, Helmut (1761) | Lost 1-2 | Marciniszyn, Michal (1556) |
Grand Prix Hanover 2009 | 12 | 6 | Summersberger, Helmut (1938) | Won 2-1 | Marciniszyn, Michal (1697) |