O'Brien attempts 14th Group 1 in Ascot's King George VI Duke Of Marmalade bids to become Aidan O'Brien's 14th Group 1 winner of the season when he faces seven rivals in Saturday's King George VI And Queen Elizabeth Stakes at Ascot. Duke Of Marmalade is joined but stablemate Hardwicke Stakes winner Macarthur as his second string while Red Rock Canyon will also represent Coolmore and is expected to take up pace-making duties. Youmzain, runner-up to O'Brien's Dylan Thomas in both this race and the Prix de l'Arc de Triomphe last season, arrives on a high having landed the Grand Prix de Saint-Cloud last time. Mick Channon's consistent five-year-old will be running in his 11th consecutive Group 1 race. Sir Michael Stoute has two strong candidates in Papal Bull and Ask as he aims for a first win since Golan's triumph in 2002. Last year's St Leger winner Lucarno will represent John Gosden and arrives in top form having won the Princess Of Wales's Stakes on his most recent outing. Terry Mills' Petara Bay, third behind Lucarno and Papal Bull last time out, completes the field.
