Ethical Diamond stuns Breeders' Cup Turf, gives Willie Mullins first win

Ethical Diamond was never supposed to look like this kind of Breeders’ Cup horse. A 5-year-old gelding by Awtaad, bought for 320,000 guineas at the Tattersalls July Sale in 2023, he had spent most of his career over hurdles and built his Flat resume in handicaps, not Grade 1 company. Yet Willie Mullins and his team found the opening anyway, and on November 1, 2025, at Del Mar, Ethical Diamond swept past the field to win the $5 million Longines Breeders’ Cup Turf by 1 1/4 lengths over Rebel’s Romance.

The upside was as striking as the timing. Mullins’ assistant David Casey had floated the idea after a Melbourne Cup plan became impractical, and what followed was a late, audacious shift that turned Mullins’ first runner at the meeting into a breakthrough. Ethical Diamond, ridden by Dylan Browne McMonagle, came from the back of the pack to cover 1 1/2 miles on firm turf in a course-record 2:25.45. It was the first Breeders’ Cup victory for both Mullins and McMonagle, and the kind of result that made the 42nd running of the Turf feel less like an upset than a breach in the sport’s usual boundaries.

What makes the performance even more telling is the path Ethical Diamond took to get there. Before Del Mar, he had already won the Duke of Edinburgh Stakes at Royal Ascot and the Ebor Handicap at York, stepping up from deep handicap territory into championship company. He also had seven lifetime starts over hurdles, a reminder that Mullins was not just sending a Flat horse into the Breeders’ Cup, but a crossover runner whose background invited skepticism until the race itself erased it. Tattersalls had described him as a dual-purpose prospect when Harold Kirk bought him on Mullins’ behalf, and that label suddenly looked prophetic.

The victory resonated far beyond one stable. Michael O’Meara, Ethical Diamond’s first trainer, said he was “shaking” while watching the race, and Mullins later said the reaction at home was “extraordinary.” For a trainer best known for jumps dominance, this was more than a one-off raid. It was proof that Mullins’ operation can spot an unconventional opening, accept the risk, and execute on the biggest stage, even against the established Flat powers that usually control the Breeders’ Cup Turf.