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    vs.      
SooHan Yoon leads the series against Yuusuke Iwasaki, 1-0-1.

event round table player one result player two
Grand Prix Kyoto 20071124Yoon, SooHan (1727)Draw 1-1Iwasaki, Yuusuke (1717)
Grand Prix Yokohama 201288Yoon, SooHan (1704)Won 2-0Iwasaki, Yuusuke (1928)