Racing Photo Gallery

FILE - This May 17, 2008, file photo shows Kentucky Derby winner Big Brown breezing during his workout with exercise rider Michelle Nevin in the morning before the 133rd Preakness Stakes horse race at Pimlico Race Course, in Baltimore. In this age of juiced sprinters, cyclists and power hitters, the Kentucky Derby wants to make sure America's signature thoroughbred race won't be won by a juiced horse. (AP Photo/Garry Jones, File)