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    vs.      
Helmut Summersberger leads the series against Geoffrey Siron, 2-0.

event round table player one result player two
Grand Prix Heidelberg 2002373Summersberger, Helmut (1797)Won 2-1Siron, Geoffrey (1612)
Grand Prix London 2003522Summersberger, Helmut (1865)Won 2-1Siron, Geoffrey (1618)