According to race officials, Practical Move's rider was uninjured and the 3-year-old colt was immediately tended to by veterinarians from the California Horse Racing Board, 1/ST Racing, and Breeders' Cup.
Practical Move had returned to action in early October at Santa Anita where he romped to a four-length victory.
Arcangelo, who was made the second choice at 7-2 and drew the inside post for the Breeders' Cup Classic, had been dealing with a hind hoof issue since losing a shoe over the weekend.
"And as we've talked about from day one, this will always be horse first, no matter what.
"We need to do right by him and missing a race is going to be what it's going to be this time."
Persons:
Tim Yakteen, Matt Stone, Arcangelo, Jena Antonucci, Javier Castellano, Frank Pingue, Toby Davis
Organizations:
Kentucky Derby, Churchill, USA, Breeders, Belmont, California Horse Racing Board, Santa Anita, racing's Triple Crown, Thomson
Locations:
Louisville , KY, USA, Louisville, Ky, Arcadia , California, Kentucky, Santa, U.S, Toronto