Churchill Downs has suspended trainer Saffie Joseph Jr. indefinitely and Lord Miles, who is trained by Joseph, has been scratched from the Kentucky Derby days after the sudden death of two of his horses at the track. The suspension prohibits Joseph, or any trainer directly or indirectly employed by him, from entering horses in races or applying for stalls at all Churchill Downs Inc.-owned tracks. The decision comes after the deaths of Parents Pride on Saturday and Chasing Artie on Tuesday. Both collapsed on the track and died after races.