Order Of St George ran out an easy winner of the Gold Cup at Royal Ascot.
An 11-length the Irish St Leger last season, he had only been seen once since then against inferior opponents.
Punters who had backed him into 10-11 favourite would have been starting to worry with half a mile to run, as Ryan Moore had nowhere to go when stuck in the pack.
French raider Mille Et Mille was allowed to set his own pace in front and at one stage was nearly 10 lengths clear before slowing down and kicking clear again.
Moore had to bide his time until finding a gap in the straight, but as soon as the four-year-old was in the clear he stamped his authority on the contest.
Luca Cumani's Mizzou gave chase in vain up the rail to finish second, while Sheikhzayedroad eventually got in the clear to claim third.
In winning a seventh Gold Cup, Aidan O'Brien once again proved he has no peers in training the stayers.
Moore said: "He's a class horse and class horses win races.
"He picked up very well and after two and a half miles, he was pouring it on at the end.