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    vs.      
Kouichi Sugiyama is tied in the series against Kento Tanaka, 1-1.

event round table player one result player two
Grand Prix Shizuoka 20151890Sugiyama, Kouichi (1597)Won 2-1Tanaka, Kento (1500)
Grand Prix Chiba 20188395Sugiyama, Kouichi (1417)Lost 0-2Tanaka, Kento (1669)