The training will be restricted to jogging and galloping. No timed workouts will be allowed.
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MORE: Santa Anita Park creates new health and safety rules following deaths of 21 horses in 2 months
Santa Anita Park creates new rules following string of horse deaths
The main track has been closed since last Tuesday following the deaths of 21 horses within two months.
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It's unclear what caused the fatal injuries and when racing will return.