O'Brien unveils dual Classic raid

Aidan O’Brien is planning to let both Duke Of Marmalade and Henrythenavigator tackle the Breeders’ Cup Classic at Santa Anita on Saturday week.

The Ballydoyle handler has already booked top American jockey John Velasquez to ride whichever colt stable jockey Johnny Murtagh rejects in the 10-furlong feature.