LOUISVILLE, Ky. - Rightly So, the 3-1 morning-line favorite, has been scratched from Friday's $1 million Breeders' Cup Filly and Mare Sprint at Churchill Downs because of an unspecified soundness issue. Trainer Tony Dutrow said he "was very disappointed" that Rightly So, owned by Zayat Stables of Ahmed Zayat, was ordered scratched by a team of equine veterinarians that conduct prerace examinations for all Breeders' Cup starters. Dutrow said the veterinarians watched Rightly So jog on the pavement outside his temporary quarters at Churchill before making the decision to scratch her. Kentucky chief steward John Veitch said there would be no forthcoming reason for the scratch “other than the Veterinary Panel were not satisfied with the way she was moving.” "The vets were not happy with the way she was moving," said Dutrow. "It's disappointing for Mr. Zayat. Hopefully we'll get her out there for another chance another day. Am I stunned? Well, I did not think I would have any soundness issues with any of the horses I brought here. I'd say it's just a day in the life of horses." Rightly So, with Cornelio Velasquez to ride, was scheduled to break from post 13 in the field of 14 fillies and mares in the seven-furlong Filly and Mare Sprint. She was a gate-to wire winner of the Grade 1 Ballerina at Saratoga on Aug. 28 in her most recent start. Her defection leaves the defending champion, Informed Decision, as the program favorite in a field of 13. Tidal Pool and First Passage, two also-eligibles for the Filly and Mare Sprint, also are scratched. The Filly and Mare Sprint is the seventh of 10 Friday races, with post time set for 5:30 p.m. Eastern.