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    vs.      
Koshiro Nakaoka leads the series against Shouhei Yamamoto, 2-0.

event round table player one result player two
Grand Prix Kitakyushu 20095120Nakaoka, Koshiro (1506)Won 2-1Yamamoto, Shouhei (1743)
Grand Prix Hiroshima 20116220Nakaoka, Koshiro (1530)Won 2-0Yamamoto, Shouhei (1761)