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    vs.      
Kouichi Sugiyama is tied in the series against Keiji Numa, 1-1.

event round table player one result player two
Grand Prix Shizuoka 20133695Sugiyama, Kouichi (1554)Lost 0-1Numa, Keiji (1518)
Grand Prix Shizuoka 2018 (legacy)7512Sugiyama, Kouichi (1325)Won 2-1Numa, Keiji (1431)