Order Of St George will face a maximum of 17 rivals as he attempts to win the Gold Cup at Royal Ascot for a second successive year.
Aidan O'Brien's charge, who went on to finish third in the Prix de l'Arc de Triomphe, warmed up for his defence with a win in the Saval Beg Stakes.
O'Brien has also left in Kingfisher while his son, Joseph, may run Motherland.
Jessica Harrington's Torcedor has improved leaps and bounds this year and is another strong Irish contender.
Michael Bell's Big Orange will have plenty of followers after his recent Sandown win and the ground looks like being in his favour.
The last two St Leger winners, Simple Verse and Harbour Law, are on course to meet with a former winner of this race, Trip To Paris, back once more.
Hughie Morrison's Sweet Selection won the Cesarewitch last year but handled the rise in grade in the Sagaro Stakes and is another likely player. Morrison could also run Nearly Caught.
Winning Story, Qewy, who is now with Charlie Appleby, Quest For More and Sheikhzayedroad are all still in the mix.
Order Of St George features among Sky Bet's Royal Ascot Bankers acca which can be backed at 16/1.
