Kentucky Derby winner Medina Spirit could be disqualified following a positive test for illegal substances after the race.
In addition, winning trainer Bob Baffert has been suspended from entering horses in races at Churchill Downs.
According to NBC Sports:
The horse that won the 2021 Kentucky Derby, Medina Spirit, has failed a drug test and its Hall of Fame trainer Bob Baffert has been indefinitely suspend from Churchill Downs, officials said Sunday.
In a news conference Sunday morning, Baffert said the winning horse tested positive for 21 picograms of betamethasone, 11 picograms above the legal limit in Kentucky racing, NBC Lexington affiliate WLEX said.