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    vs.      
Takashi Koyanagi is tied in the series against Jinpei Hassaku, 1-1-1.

event round table player one result player two
Grand Prix Kobe 20111540Koyanagi, Takashi (1500)IDHassaku, Jinpei (1689)
Grand Prix Kobe 2012917Koyanagi, Takashi (1594)Won 2-1Hassaku, Jinpei (1717)
Grand Prix Kobe 20121315Koyanagi, Takashi (1606)Lost 1-2Hassaku, Jinpei (1715)