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    vs.      
Kenji Oiso is tied in the series against Hiroyuki Ishiwada, 1-1.

event round table player one result player two
Grand Prix Yokohama 2012480Oiso, Kenji (1535)Lost 1-2Ishiwada, Hiroyuki (1506)
Grand Prix Shizuoka 20131443Oiso, Kenji (1617)Won 2-0Ishiwada, Hiroyuki (1565)