Ryan Moore hopes a spartan diet pays off in style at Sha Tin on Sunday morning when Aidan O’Brien’s dual-Group One winner Warm Heart lines up for the Hong Kong Vase. For the first time, O’Brien’s Ballydoyle team are represented in all four Group One races at an International Carnival that brings the curtain down on 2023′s elite flat race action. The four races are worth almost €14 million in prize money and Luxembourg will take his chance in the €4.2 million cup over 10 furlongs.