Jean-Claude Rouget’s Ace Impact extended his unbeaten record with a brilliant performance to land the Qatar Prix du Jockey Club at Chantilly.

Having completed a hat-trick on his previous run over 10 furlongs at this track last month, he gained a fourth success in scintillating fashion, coming from well off the pace in the hands of Cristian Demuro to collar long-time leader and favourite Big Rock inside the final furlong.

The additional half-furlong certainly helped the son of Cracksman, as Ace Impact looked better the further he went.

British raider Epictetus, trained by John and Thady Gosden, held every chance turning in, but Frankie Dettori’s mount faded to finish fifth, while Aidan O’Brien’s Continuous was in third throughout, before failing to see out the final furlong, eventually finishing eighth of the 11 runners.