Derby winner Wings of Eagles has been retired due to injury just a month after the colt's stunning victory at Epsom.
The Aidan O'Brien-trained colt suffered a fractured to his near-fore sesamoid joint which will bring an end to his racing career a matter of weeks after winning the world's premier Classic at odds of 40-1.
Wings of Eagles failed to pull off a Derby double at the Curragh on Saturday, finishing third in what will be his last race at the age of three.
O'Brien said: "It's shocking news. Wings Of Eagles has suffered a bad fracture to his near-fore sesamoid and has been retired. He will have a pin inserted in his leg but, unfortunately, his racing career is over.
"He was obviously a very good colt. He showed that at Epsom and again in the Irish Derby. It was a really brave effort in the circumstances as the injury obviously happened at some stage of the race.
"He was top class and as well as having stamina he could quicken very well. Not being able to race him again is a big loss."