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

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