Classic-winning miler Aussie Rules has been put down at stud after suffering a short illness due to a tumour.
The former Aidan O'Brien-trained son of Danehill, winner of both the French 2000 Guineas and Grade One Shadwell Turf Mile at Keeneland in 2006, was euthanized on veterinary advice at Lanwades Stud, where he was residing.
Since retiring, the 13 year-old, who had been at Lanwades since 2012 after being transferred from Castlehyde Stud in Ireland, had sired the winners of over 790 races worldwide, including 18 Group winners.
Among his most notable offspring was talented mare Fiesolana, winner of the 2014 Matron Stakes.
Kirsten Rausing, owner and general manager of Lanwades Stud, said: "We are greatly saddened at the tragic loss of Aussie Rules.
"He was a lovely co-operative horse to work with, his enthusiasm and zest for life makes his loss the harder to bear for all of us who knew him.
"His name will live on through his many successful racing progeny."