Bob Baffert no stranger to failed drug tests by his horses

LOUISVILLE, Ky. (AP) — Trainer Bob Baffert is used to making history. The Hall of Famer could make some unwanted history if Medina Spirit becomes only the second Kentucky Derby winner to be disqualified for a failed drug test. Baffert announced that Medina Spirit tested positive for the steroid betamethasone, but denies wrongdoing while promising to be transparent with Kentucky racing officials. No matter the outcome _ which could take weeks to resolve _ the episode marks the fifth such controversy for Baffert in just over a year.