Top-class chaser Nick Dundee died on Saturday after shattering a fetlock while in retirement at Coolmore Stud. He was aged 10.
The horse was retired by trainer Edward O'Grady after winning at Cork last December when he was found to be unsound after the race.
Injury problems dogged the career of the talented gelding, who spent his final months at Coolmore, the stud of his owner Sue Magnier.
Nick Dundee won a total of six races for O`Grady but will be best remembered for showing the courage to defeat the effects of a life-threatening fall in the 1999 Royal & SunAlliance Chase at the Cheltenham Festival.
Sent off a hot favourite, Nick Dundee was about to cruise into the lead under Norman Williamson when a rare lapse in his jumping led to a bone-crunching fall and left Looks Like Trouble clear to win by a distance.
Nick Dundee's life hung in the balance for days afterwards as vets battled to save him but he made a full recovery to record an emotional win on his reappearanceat Navan two seasons later.
O`Grady said today: "Nick Dundee aggravated the old injury sustained at Cheltenham while in the paddock at Coolmore.
"This resulted in an irreparable fracture of the pastern and the vets advised that he be euthanised on humane grounds.
"It was a great shame as I had been to see him recently and he appeared to be enjoying his retirement."
On a brighter note, O'Grady reported Nick Dundee's half-brother Ned Kelly to be "in good form and very much on target" for the Smurfit Champion Hurdle at Cheltenham next month.