KentuckyDerby.com and HorseRacingInside.com (links below) | May 5, 2012
At KentuckyDerby.com, click on any of the contenders' names and a new page will appear with links to videos (click 'Replay') and results charts (click 'Chart') of that horse's previous races, plus much more: http://www.kentuckyderby.com/horses