High hopes for O'Brien at Royal Ascot

This year's Royal Ascot meeting gets underway in Britain today with a top class international line-up.

Last year, Aidan O'Brien and Johnny Murtagh dominated the event and will be hoping that Master Craftsman can set the wheels in motion this year in the St James's Palace Stakes.

O'Brien's Air Chief Marshall is also in the field for the Coventry Stakes.