Nicky Henderson's multiple Grade One-winning star Sir Gino has died after failing to recover from 'severe deep-seated infections'.
The six-year-old had picked up the infections during his recovery from a broken pelvis suffered during the Unibet Hurdle at Cheltenham in January.
Former champion trainer Henderson had hoped his horse could make a recovery at his Seven Barrows yard, but confirmed the sad news on Tuesday that they had had to say goodbye to Joe and Marie Donnelly's runner.
In a statement on X, Henderson said: "We have very sadly lost the battle to overcome Sir Gino's ailment and he has had to be put to sleep at the veterinary hospital this morning.
"He has been fighting from severe deep-seated infections that he had overcome last year prior to his brilliant return in the Christmas Hurdle but this time it had spread too far, although his fractured pelvis was healing well.
"He was not only brilliant but one of the nicest kindest horses you could ever wish to see and this leaves an awful hole in Seven Barrows this morning and a very sad day for Joe & Marie Donnelly.
"They have had some wonderful horses over the years and they both care so much for them so losing such a young star with his life in front of him is particularly cruel.
"Sir Gino was unbeaten in all his seven starts including three Grade 1's over hurdles and an amazing display in a Grade 2 Chase on his one and only start over fences.
"We would have to say that he was just at least as good as any of all the amazing horses we have been lucky enough to have trained. Unforgettable in every way."
Sir Gino had won all seven of his career starts before January's injury at Cheltenham, including the Christmas Hurdle, Fighting Fifth Hurdle and Aintree's 4YO Hurdle.
