Less than a week after his latest Group One triumph at Goodwood, Too Darn Hot has been retired after picking up a career-ending injury.
Connections of the John Gosden-trained colt announced the news on Monday, revealing last season's champion European two-year-old had undergone successful surgery at Newmarket Equine Hospital.
He is thought to have sustained the injury in last week's Group One Sussex Stakes.
"Too Darn Hot has undergone emergency surgery to his right-hind cannon after X-rays revealed a hairline fracture," Simon Marsh, racing and bloodstock manager for owners Andrew and Madeleine Lloyd Webber, said.
"I am glad to say that he has come safely through surgery.
"The injury is not life threatening and he should make a full recovery. His future now lies at Dalham Hall Stud in Newmarket where he will recuperate and stand at stud for the 2020 season."
A son of Dubawi, Too Darn Hot - ridden in all his races by Frankie Dettori - was unbeaten in four starts as a juvenile, culminating in the Dewhurst Stakes at Newmarket.
An injury-delayed return this season came in the Dante Stakes at York, where he was second to Telecaster, before finishing second in the Irish 2,000 Guineas and third in the St James's Palace Stakes.
He recaptured winning form at the top level in the seven-furlong Prix Jean Prat at Deauville, and followed up in equally impressive fashion back at a mile at Goodwood.