Aidan O’Brien is out to win his fourth Weatherbys Private Banking Cheshire Oaks in the last seven years with Terrific at Chester today.

Valyra, the unbeaten French Oaks winner, has been put down after suffering a serious injury while being prepared for the Qatar Prix de l’Arc de Triomphe.

Christophe Lemaire will not ride Stacelita in Sunday’s Prix de l’Arc de Triomphe after suffering a bad injury on Friday.