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    vs.      
Ryuichi Arita leads the series against Takahiro Katayama, 1-0-1.

event round table player one result player two
Grand Prix Nagoya 20041239Arita, Ryuichi (1709)Draw 1-1Katayama, Takahiro (1659)
Grand Prix Kitakyushu 2005136Arita, Ryuichi (1836)Won 2-1Katayama, Takahiro (1879)