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    vs.      
Marcello Calvetto is tied in the series against Peter Vieren, 1-1.

event round table player one result player two
Grand Prix Lyon 2010QCalvetto, Marcello (1906)Lost 1-2Vieren, Peter (1954)
2011 World Championship1434Calvetto, Marcello (1948)Won 2-0Vieren, Peter (1812)