ARCADIA, Calif. — Top European jockey Ryan Moore has been booked to ride Astronomer in the Breeders’ Cup Mile at Santa Anita on Nov. 4, trainer Simon Callaghan said on Saturday.
The decision was finalized after trainer Aidan O’Brien withdrew top contender Paddington from consideration. Paddington, the winner of four consecutive Group 1 races in Ireland and Britain earlier this year, has been retired to stud.