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    vs.      
Norihiko Koshiba is tied in the series against Ryou Takahashi, 1-1.

event round table player one result player two
Grand Prix Kitakyushu 20092133Koshiba, Norihiko (1479)Won 2-0Takahashi, Ryou (1396)
Grand Prix Yokohama 20139242Koshiba, Norihiko (1577)Lost 1-2Takahashi, Ryou (1459)