A rare two-year-old runner for Cheltenham Gold Cup and Grand National-winning trainer Gordon Elliott, the son of Bated Breath made a big impression on his racecourse debut at the Curragh and returned to the track to land last month's Railway Stakes.
He now steps up to the highest level and bids to provide Elliott with a first Group One success.
Aidan O'Brien has claimed this prize a remarkable 15 times and sends four juveniles into battle.
Sioux Nation makes his first appearance since winning the Norfolk Stakes at Royal Ascot in June, while US Navy Flag is a course-and-distance winner and was last seen chasing home Cardsharp in the July Stakes at Newmarket.
Declarationofpeace and the only filly in the field, Actress, are the other two Ballydoyle representatives.
Ken Condon has also declared Romanised, while Tom Dascombe's Frozen Angel and Helvetian from Mick Channon's yard travel from Britain.