European One Master Out of Breeders' Cup Mile

One Master will not run in the Nov. 7 FanDuel Breeders' Cup Mile Presented by PDJF (G1T) at Keeneland, according to trainer William Haggas. He hailed the 6-year-old daughter of Fastnet Rock as "an absolutely brilliant mare."

Owned by Roy and Gretchen Jackson, One Master was withdrawn from the Mile after having raised muscle enzymes when arriving at Keeneland this week. Although she responded well to treatment, the decision was taken not to run the three-time group 1 winner. 

Haggas said: "She's not running. She got set fast when she arrived on the first morning out there. Her muscle enzymes were raised and, although they've come down after some treatment and she seems fine, the veterinary team in conjunction with us have decided she won't run.

"It's very disappointing but the most important thing is that she's fine."

One Master became the first triple winner of the Qatar Prix de la Foret (G1) when scoring at ParisLongchamp last month under regular rider Pierre-Charles Boudot. She had been pegged as a 12-1 chance on the morning-line for the Mile.

An attempt at a fourth victory in the seven-furlong group 1 is unlikely, with Haggas expecting the mare to be retired following her Breeders' Cup setback.

"She's finished now in all probability," he said. "She's been invited to Hong Kong but I'd say that's less likely than likely. She's been an absolutely brilliant mare. Absolutely fantastic."

Bred by the Jacksons, One Master won seven of her 23 starts including two group 3 contests—the Saint Clair Oak Tree Stakes (G3) and the Coolmore Stud Fairy Bridge Stakes (G3)—alongside her group 1 haul.

She was placed in a further eight starts, four of which were in group 1s, and collected £939,644 (US$1,212,656) in win and place prize money.

One Master's defection from the mile could clear the way for also-eligible and 30-1 outsider Order of Australia to start.