Of the five Thoroughbred Group 1 winners on Sunday’s Prix de l’Arc de Triomphe (G1) undercard at ParisLongchamp, Friendly Soul and Ramatuelle are the likeliest to proceed to the Breeders’ Cup.

Opera Singer stole the show on the undercard with a five-length conquest of the Prix Marcel Boussac. So devastating was the Aidan O’Brien pupil that the ever-reticent jockey Ryan Moore was already talking up her chances in the 2024 Arc.

In addition to Alpinista in the main event, British-trained horses captured two other Group 1s on Arc Day, and the French turned their own Group 1 triple in Breeders’ Cup Challenge races.