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    vs.      
Klaas Gruber is tied in the series against Arjan van Leeuwen, 1-1.

event round table player one result player two
Grand Prix Antwerp 20131518Gruber, Klaas (1741)Lost 1-2van Leeuwen, Arjan (1834)
Grand Prix Amsterdam 2017524Gruber, Klaas (1782)Won 2-0van Leeuwen, Arjan (1646)