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    vs.      
Jonas Koestler leads the series against Christian Calcano, 2-1.

event round table player one result player two
Grand Prix Pittsburgh 2011159Koestler, Jonas (1980)Won 2-0Calcano, Christian (1952)
2011 World Championship887Koestler, Jonas (1765)Won 2-0Calcano, Christian (1661)
2011 World Championship1094Koestler, Jonas (1761)Lost 1-2Calcano, Christian (1661)