Uncle Mo, a talented Thoroughbred stallion, was euthanized at the age of 16 following an injury to his left foreleg. He was known for his success both on the racetrack and in the breeding shed, and his loss was deeply felt by the racing community. Uncle Mo was bred in Kentucky and sold for $220,000 to Mike Repole, who owned him throughout his racing career and at stud.

Uncle Mo had a successful racing career, winning the Breeders’ Cup Juvenile and being named the Eclipse champion 2-year-old male. He later became a successful stallion, siring numerous grade 1 winners and earning a reputation as an emerging broodmare sire. His offspring included Nyquist, a Kentucky Derby winner, and Golden Pal, a two-time Breeders’ Cup winner. Uncle Mo’s stud fee reached $150,000 and he was a leading sire multiple times.

Uncle Mo’s legacy extends beyond the racetrack, as he is now an influential broodmare sire with many successful offspring. His impact on the racing industry was profound, and he will be remembered as a special and iconic horse by those who knew him. His owner, Mike Repole, expressed gratitude for the opportunity to work with Uncle Mo and reflected on the horse’s lasting impact on his life and career.