Richard Hannon's star milers Toronado and Olympic Glory feature in a field of 10 for the JLT Lockinge Stakes at Newbury on Saturday.
The pair are both in the ownership of Sheikh Joaan Al Thani's Al Shaqab Racing operation, with Olympic Glory starring last season with his victory in the Queen Elizabeth II Stakes at Ascot on Champions Day.
Toronado has not run since finishing last of six to Declaration Of War in the Juddmonte International at York, having previously won the Qipco Sussex Stakes at Glorious Goodwood.
Hannon has a third string to his bow in the shape of Montiridge.
Leading the opposition to the Hannon runners is Aidan O'Brien's American import Verrazano.
The Grade One-winning colt would be making his first start for the Ballydoyle trainer should he take his chance.
German raider Chopin has been supplemented at a cost of £16,000.
The Andreas Wohler-trained four-year-old will head to England for a third time after finishing seventh in both the Epsom Derby and the Tercentenary Stakes at Royal Ascot.
The Qatar Racing-owned four-year-old has already had a pipe-opener this term, when he claimed second spot in a Group Three at Dusseldorf in April.
Wohler said: "He has just been supplemented for Newbury and we are looking forward to coming over with him.
"He is in very good form and he should be a lot fitter after that first run.
"Jamie Spencer will ride again."
Connections of Tullius are buoyed by the recent rainfall at the Berkshire circuit.
The Andrew Balding-trained six-year-old has made a strong start to the campaign, with a second-placed finish in the Lincoln backed up by a runaway success in the bet365 Mile at Sandown.
Sam Hoskins, racing manager for owners Kennet Valley Thoroughbreds, said: "I was just speaking to Andrew, and the horse is very well.
"If it is soft ground, that is obviously not an inconvenience.
"Then again, if the ground is good, good to soft, that will also be fine as, if it goes heavy that will play to the strengths of horses like Top Notch Tonto and Olympic Glory.
"As long as it's not good to firm, we are good to go.
"Jimmy Fortune will stay on board."
Soft Falling Rain has been left in by Mike de Kock, with Sruthan a possible for Irish trainer Paul Deegan.
Empire Storm (Michael Attwater) and Top Notch Tonto (Brian Ellison) complete the confirmations.