Camelot ridden by Joseph O'Brien and trained by Aidan O'Brien wins the Epsom Derby  on Derby Day at Epsom Downs Race course, Epsom, England, Saturday, June 2, 2012.  (AP Photo/Tom Hevezi)
Camelot ridden by Joseph O'Brien and trained by Aidan O'Brien wins the Epsom Derby on Derby Day at Epsom Downs Race course, Epsom, England, Saturday, June 2, 2012. (AP Photo/Tom Hevezi) ASSOCIATED PRESS
Camelot ridden by Joseph O'Brien and trained by Aidan O'Brien wins the Epsom Derby on Derby Day at Epsom Downs Race course, Epsom, England, Saturday, June 2, 2012. (AP Photo/Tom Hevezi) ASSOCIATED PRESS