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    vs.      
David Calf is tied in the series against Philip van Donselaar, 1-1.

event round table player one result player two
Grand Prix Barcelona 201610278Calf, David (1731)Lost 1-2van Donselaar, Philip (1567)
Grand Prix Copenhagen 2018146Calf, David (1956)Won 2-1van Donselaar, Philip (1769)