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    vs.      
Ren Ishikawa leads the series against Toshiyuki Kadooka, 2-0.

event round table player one result player two
Grand Prix Kyoto 20071433Ishikawa, Ren (1922)Won 2-0Kadooka, Toshiyuki (1679)
Grand Prix Kobe 2008920Ishikawa, Ren (1895)Won 2-1Kadooka, Toshiyuki (1696)