The Tin Man has set up a possible clash with Caravaggio in the July Cup with his win in the Diamond Jubilee Stakes on the final day of the Royal Ascot meeting.
Trained by James Fanshawe and ridden by Tom Queally, The Tin Man won the Diamond Jubilee Stakes from Tasleet and Limato.
"I'm a very relieved man and I'm very grateful to The Tin Man for putting up a fantastic performance, to Tom, who gave him a great ride, and everyone back at home," Fanshawe said.
"He doesn't tell you a thing at home this horse.
"These are the horses you need. The Tin Man is a star horse and we're lucky to have him.
"To have a horse of that calibre for the Fred Archer Partnership (owners) is really exciting.
"He's so laid back the horse and when he produces that sort of performance it's absolutely thrilling."
Queally, best known for partnering the great Frankel to each of his 14 career wins, had some anxious momebts before The Tin Man was declared the winner.
Both The Tin Man and Tasleet had appeared to squeeze Limato in the closing stages but the result remained.
Fanshawe said the July Cup was on the agenda.
"He's in the July Cup so we'll see how he is over the next few days," he said.
"It will be interesting when the four-year-olds meet the three-year-olds, as they looks a good bunch."
Highland Reel's brother Idaho was another highlight on day five, winning the Group Two Hardwicke Stakes.
His win meant Aidan O'Brien was the leading trainer at the meeting.
"We're obviously in a very privileged position to be working with such people and horses," O'Brien said.
"It's a lot of hard work by a lot of people day in and day out.