Telescope justified 5-4 favouritism to go some way to vindicating the hype in the Neptune Investment Management Great Voltigeur Stakes at York.
Once favourite for the Epsom Derby, Telescope had been turned over at long odds-on just 11 days ago in the Rose of Lancaster Stakes at Haydock, but trainer Michael Stoute had no doubts about running him again so soon.
He was keen early in the hands of Ryan Moore on his first start over a mile and a half as he was settled in third behind Nichols Canyon and Cap O'Rushes.
Moore struck for home well over two furlongs out and quickly put three lengths between himself and the pack.
Although Aidan O'Brien's lightly-raced Foundry closed to within a length and a quarter, Telescope never looked like being caught.
The winner would need to be supplemented for the Ladbrokes St Leger at Doncaster, but was also given quotes for the Prix de l'Arc de Triomphe.
Moore said: "He's won the Voltigeur on his fifth start and has never been out the first two - he's not done a great deal wrong in his life."