Aidan O'Brien - The Horse Whisperer

What's the secret of Aidan O'Brien's success? Ahead of Saturday's Epsom Derby, Mark Chapman, alongside BBC Horse Racing Correspondent Cornelius Lysaght and the racing writer for the Sunday Times, Donn McClean, finds out more about one of flat racing’s greatest trainers. They discuss how the Irish trainer went from total unknown to a dominant force resulting in last year's winner, Wings of Eagles. And they debate if Saxon Warrior, the unbeaten odds-on favourite, can win O’Brien the Epsom showpiece for a record-equalling seventh time.