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    vs.      
Tadashi Yokoyama is tied in the series against Itaru Ishida, 1-1.

event round table player one result player two
Grand Prix Hiroshima 2001114Yokoyama, Tadashi (1645)Lost 1-2Ishida, Itaru (1612)
Grand Prix Fukuoka 2002813Yokoyama, Tadashi (1770)Won 2-0Ishida, Itaru (1866)