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youichi ui at 2009 mfj superbike rd. 1 japan japanese youichi ui.jpg youichi ui
 youichi ui
youichi ui

youichi ui -lrb- born november 27 , 1972 in chiba -rrb- is a former grand prix motorcycle road racer .
his best seasons were in 2000 , when he finished second in the 125cc world championship behind roberto locatelli and in 2001 , when he finished second behind manuel poggiali .
with his 6 grand prix victories in 2001 , ui tied a record set by kenny roberts in 1983 of most wins by a rider without winning a championship .
he raced in japan in 2007 , winning the all japan 250cc road race championship .
