O'Brien & Moore chasing more Derby glory After City Of Troy's redemptive triumph at Epsom yesterday, Aidan O'Brien and Ryan Moore are on the hunt for more Derby success at Chantilly this afternoon where Diego Velazquez lines up in the Qatar Prix du Jockey Club (3.05pm). The son of Frankel, who landed a Group 2 at Leopardstown on Irish Champions Weekend, was beaten less than a length when fourth in the Poule d'Essai des Poulains at Longchamp last month. Closely related to Broome and Point Lonsdale, O'Brien's colt may well be suited by stepping up two and a-half furlongs in trip. The Ballydoyle maestro, who now has the remarkable tally of ten Epsom Derby winners to his name, will be bidding for a second victory in the French equivalent after St Mark's Basilica landed the prize in 2021.