Medina Spirit’s Kentucky Derby win in doubt after post-race drug test

Kentucky Derby winner Medina Spirit has tested positive for elevated levels of betamethasone, trainer Bob Baffert revealed Sunday, throwing the horse’s victory last weekend at Churchill Downs into question.Kentucky Derby winner Medina Spirit has tested positive for elevated levels of betamethasone, trainer Bob Baffert revealed Sunday, throwing the horse’s victory last weekend at Churchill Downs into question.