Unbeaten two-year-old champion and Breeders' Cup Juvenile winner Game Winner was expected to make his 2019 debut in the San Felipe Stakes along with stablemate Improbable.
Since late December, 21 horses have been euthanised after suffering catastrophic injuries at Santa Anita's main dirt track while either racing or training
The track, first opened to racing in 1934, has played a key role in U.S. thoroughbred horse racing, often hosting major races including the Breeders' Cup.
Meanwhile, Santa Anita's six-furlongs (three-quarters of a mile) inner exercise track reopened on Friday after being inspected by veteran trackman Dennis Moore and Mick Peterson from University of Kentucky’s Racing Surfaces Testing Lab.
No deaths have occurred on the exercise track and Moore said he was "happy with it," the racetrack reported.
Only galloping or jogging will be permitted
"Like all athletes horses need to stay active, so this is a good decision for their overall health since it allows our horses to get out of their stalls and keeps them moving to aid their digestion,” Hall of Fame trainer Bob Baffert said in a statement.
More intense but still restricted workouts may begin on the training track on Monday, with jogging and galloping possibly also being permitted on the main track beginning on Monday, Tim Ritvo, chief operating officer of track owner The Sronach Group, told Daily Racing Form on Friday.
He said regular workouts might be expanded to the main track by next weekend.
Depending on the outcome of the inspection and weather, racing could potentially resume at the track on March 21, he said.
(Reporting by Gene Cherry in Raleigh, North Carolina; Additional reporting by Steve Gorman in Los Angeles; Editing by Ken Ferris)
