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    vs.      
Takahiro Katayama is tied in the series against Akimasa Yamamoto, 1-1-1.

event round table player one result player two
Grand Prix Kyoto 2003929Katayama, Takahiro (1610)Won 2-0Yamamoto, Akimasa (1629)
Grand Prix Kyoto 2003124Katayama, Takahiro (1630)Draw 1-1Yamamoto, Akimasa (1645)
Grand Prix Okayama 2008532Katayama, Takahiro (1781)Lost 1-2Yamamoto, Akimasa (1730)