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    vs.      
Helmut Summersberger leads the series against Jelger Wiegersma, 2-0.

event round table player one result player two
Grand Prix London 2001122Summersberger, Helmut (1775)Won 2-0Wiegersma, Jelger (1792)
2007 World Championship810Summersberger, Helmut (1803)Won 2-0Wiegersma, Jelger (1870)