On this day in racing history on May 21, 2011... Shackleford held off a late rally by Kentucky Derby winner Animal Kingdom to win the 136th running of the G1 Preakness Stakes by 1/2 a length at odds of 12-1 for trainer Dale Romans with Jesus Castanon in the irons! In his 4yo campaign, Shackleford came back to win the G2 Churchill Downs Stakes, G1 Met Mile and retired after his win in the G1 Clark Handicap in November of 2012 with $3,090,101 in lifetime earnings. Check out his horse profile on Eq