A regular shuttler to Coolmore Australia in the first four years of his stud career, leading US sire and brilliant racehorse Uncle Mo was euthanised in Kentucky on Thursday at age 16 on veterinary advice following an injury to his left foreleg.
“We’re all still in shock,” said Coolmore America’s Dermot Ryan. “He will be greatly missed by everyone here in particular by his personal groom Rene Macias. He was an exceptional sire both on the racetrack and in the sales ring. I would like to thank Mike Repole for giving us the opportunity to stand him in the first instance and for being a truly fantastic partner, Todd Pletcher for training him to perfection, the Coolmore partners for placing such faith in him and our loyal clients for their unwavering support over the years.”
“I would also like to thank Dr Barry David, Dr Bob Hunt and Dr Cole Sandow of Hagyards for their efforts to save him along with all the team here at Ashford for the excellent care they afforded him throughout his time here.”
The Champion 2YO Colt of his generation, Uncle Mo was raced by Repole Stable.
Uncle Mo He retired to stud at a fee of US$35,000 in 2012 rising to aa career-best of US$175,000 in 2021 and was advertised at US$125,000 in 2025.
Uncle Mo sired 109 stakes-winners worldwide, 15 of them Group I winners and si already making his mark as a broodmare sire with his daughters producing 24 stakes-winners, four of them Group I winners.
