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    vs.      
Akihiro Kashima leads the series against Katsuhiko Okumura, 2-0.

event round table player one result player two
Grand Prix Yokohama 2004681Kashima, Akihiro (1680)Won 2-1Okumura, Katsuhiko (1510)
Grand Prix Kyoto 20074117Kashima, Akihiro (1613)Won 2-0Okumura, Katsuhiko (1455)