Kentucky Derby winner Medina Spirit faces disqualification after failed drug test

• Trainer Bob Baffert denies any wrongdoing over test
• I don't feel embarrassed, I feel like I was robbed'

Churchill Downs has suspended trainer Bob Baffert from entering horses at the track and suggested that it would invalidate Medina Spirit's Kentucky Derby victory if the results of a failed postrace drug test are upheld.

The track said in a statement on Sunday that failure to comply with the rules and medication protocols jeopardizes the safety of horses and jockeys, the sport's integrity and the Derby's reputation.