Longshot Ria Antonia won the $2 million Juvenile Fillies in a dramatic opening to Saturday's nine Breeders' Cup races.
Javier Castellano poses for a picture in the winner's circle after riding Ria Antonia to first place in the Juvenile Fillies during the Breeders' Cup World Championships at Santa Anita Park on November 2, 2013 in Arcadia, California
She's a Tiger was originally credited with a win by a nose over the hard-charging Ria Antonia, who went off at 32-1 in the 10-horse field.
But stewards ruled She's a Tiger, ridden by veteran Gary Stevens, drifted out and impeded Ria Antonia's forward movement and demoted her to second in the 1 1/16-mile race.
Rosalind was third in a race that was marred by the breakdown of the Bob Baffert-trained Secret Compass, who had to be euthanized.
Veterinarian Wayne McIlwraith said the filly sustained a broken leg with a dislocation, which causes a disruption of blood supply that prevents vets from repairing the injury.
"That's an injury we can't bring them back from because when they dislocate on the track they lose their blood supply, so she has been euthanized," he said.
Jockey John Velazquez was thrown from Secret Compass when she went down, but apparently escaped serious injury.
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