Nitrogen confirmed her status as an extraordinary champion by capturing the Distaff
The formidable daughter of Medaglia d'Oro drew off to beat Fully Subscribed by 2 lengths at Keeneland to secure her tenth victory. José Ortiz judged the pace to perfection, and Mark Casse is already contemplating facing the males once again in 2027

By Diego H. Mitagstein (Special correspondent for Turf Diario in Lexington, Kentucky)
LEXINGTON, Kentucky (From a special correspondent).— Nitrogen sealed her status as an absolute champion with a decisive victory in the Breeders' Cup Distaff (G1), one of Saturday's premier events at Keeneland. The D.J. Stablerepresentative drew off to win by 2 lengths over Fully Subscribed (Tiz the Law), authoritatively settling a matchup that had raised immense expectations.
Runner-up in this very event in 2025, the daughter of Medaglia d'Oro returned to claim ultimate glory and prove that her talent knows no bounds. Sent off as the 3-5 favorite, she delivered without a hitch, though this time she did not need to produce one of those devastating blowouts that characterized several of her previous victories.
With José Ortiz in the irons, Nitrogen covered the 1,800 meters in 1:49.80, leaving Fully Subscribed in second, while Measure (Essential Quality) finished third, another 2 1/4 lengths back.
The race unfolded almost perfectly for the winner. Super Corredora (Gun Runner) took the lead and set fractions of 23.57, 47.04, and 1:11.22, with Eunomia (Tiz the Law) among the main early pursuers.
Ortiz positioned Nitrogen a couple of lengths back in the three-path, avoiding any premature duel.
As they reached the far turn, the favorite began her decisive move. She range up outside the leaders, entered the stretch with a 1 1/2-length advantage, and despite her usual tendency to drift outward, she never allowed Fully Subscribed to get dangerously close.
“She felt fantastic. She broke well, allowed me to place her right where I wanted, and relaxed. When I asked her to accelerate, she had so much power,” Ortiz explained.
The jockey noted he was never overly concerned about his chief rival.
“I saw her behind us with about 600 meters to go. In the stretch she drifted out a bit, which she usually does, but I felt I had the race under control,” he added.
For Mark Casse, trainer of the winner, the performance carried special significance.
“She is extraordinary. To be this good on both turf and dirt is incredible. She never ceases to amaze me,” stated the conditioner, who enjoyed another triumph of immense magnitude.
Regarding Nitrogen's tendency to drift slightly during the finish, Casse responded with humor: “She always does the same thing. I think she just loves the crowd.”
The winner's career record justifies such admiration. She has never finished worse than third in 19 starts and boasts 10 victories, displaying a degree of versatility that very few racehorses ever achieve.
A champion 2-year-old in Canada, she received the Eclipse Award as champion 3-year-old filly in 2025, the season in which Casse made the call to switch her from turf to dirt.
The surface change proved extraordinary. During 2026, she won four of her seven starts and even dared to tackle the males in the Whitney Stakes (G1), where she finished second to Sovereignty.
With this Distaff victory, her candidacy for another Eclipse Award has been tremendously strengthened. Casse also revealed that Nitrogen will likely continue racing in 2027 as a 5-year-old.
“One of the reasons we chose the Distaff over the Classic was to secure a Breeders' Cup win. Next year we will likely take a different path, which will include facing the boys again,” he previewed.
Fully Subscribed, trained by Chad Brown and ridden by Flavien Prat, turned in another excellent effort, though she had to settle for second place.
Brown noted that his jockey executed the tactical plan to perfection: attacking on the outside without attempting to save ground along the rail.
“We knew Nitrogen tends to drift out. I didn't want my filly pinned inside trying to make a move on the rail. I preferred giving her clear running room to launch her rally,” he explained.
The trainer acknowledged the superiority of the winner: “I am very pleased with the race. We closed the gap significantly compared to the Ogden Phipps, but today we ran into a better horse once again.”
Prat agreed: “I thought I was in a good position to get to her, but it took us a bit to get into full gear.”
Third place went to Measure, also trained by Casse, who completed a highly respectable performance against the nation's top fillies and mares.
“We simply ran into two superior rivals. My filly ran a huge race and I'm very happy,” commented Manny Franco.
Super Corredora finished fourth, ahead of Regaled (Mohaymen), who needed a faster early pace to aid her closing stretch drive.
But the afternoon belonged entirely to Nitrogen, who returned $3.58 to win and added another brilliant chapter to her career.
A champion on two surfaces, a winner against top-class distaffers, and proven against the males, Nitrogen has already built an exceptional legacy. Her triumph at Keeneland merely confirmed what was already clear: she stands among the absolute giants of American racing, with plenty left to offer.

