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    vs.      
Simon Nielsen leads the series against Peter Vieren, 2-1.

event round table player one result player two
Grand Prix Paris 20169231Nielsen, Simon (1951)Won 2-1Vieren, Peter (1973)
Grand Prix Lille 20161499Nielsen, Simon (1928)Won 2-1Vieren, Peter (1886)
Grand Prix Barcelona 20179125Nielsen, Simon (1943)Lost 1-2Vieren, Peter (1904)