Kentucky Derby 2013 (31 images)

Jockey Joel Rosario celebrates after winning the 139th Kentucky Derby on Orb at Churchill Downs on May 4, 2013 in Louisville, Kentucky. UPI/Kevin Dietsch

Jockey Joel Rosario, ridding Orb (L), leads the pack as he wins the the 139th Kentucky Derby at Churchill Downs on May 4, 2013 in Louisville, Kentucky. UPI/Kevin Dietsch

Jockey Joel Rosario, ridding Orb, wins the 139th Kentucky Derby at Churchill Downs on May 4, 2013 in Louisville, Kentucky. UPI/Kevin Dietsch

Orb, ridden by Joel Rosario, heads for the winners circle led by trainer Shug McGaughey, after winning the 139th running of the Kentucky Derby at Churchill Downs in Louisville, Kentucky. May 4, 2013. UPI/Mark Abraham