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    vs.      
Masashi Oiso is tied in the series against Ryuichi Arita, 1-1.

event round table player one result player two
Pro Tour Columbus 200471Oiso, Masashi (2015)Won 2-0Arita, Ryuichi (1773)
Grand Prix Yamagata 20061028Oiso, Masashi (1883)Lost 1-2Arita, Ryuichi (1851)