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    vs.      
Jinpei Hassaku is tied in the series against Tadashi Yokoyama, 1-1.

event round table player one result player two
Grand Prix Shizuoka 2001610Hassaku, Jinpei (1698)Lost 0-2Yokoyama, Tadashi (1737)
Grand Prix Fukuoka 2002106Hassaku, Jinpei (1744)Won 2-0Yokoyama, Tadashi (1806)