As he often does, trainer Aidan O'Brien entered a pacemaker in Wednesday's Juddmonte International (G1) at York, ostensibly to ensure a proper gallop for Coolmore's star three-year-old City of Troy.

The only Breeders’ Cup Challenge event at Newmarket Saturday was the Royal Lodge (G2), but the day’s top-level juvenile prizes, the Middle Park (G1) and Cheveley Park (G1) for fillies, also have implications for “Future Stars Friday” at Santa Anita.