Qatar Prix Marcel Boussac (Group 1)

THE O’Brien, Soumillon and the Coolmore Stud ownership group may have been forced to endure a gut-wrenching reverse in the Arc, but they had plenty to smile about at the beginning of the card as Diamond Necklace and Puerto Rico, representing star Coolmore stallions future and past in St Mark’s Basilica and Wootton Bassett, landed the day’s two juvenile Group 1s.