Kentucky Derby winner Medina Spirit died after training at Santa Anita Racecourse on Monday. According to Bob Baffert’s lawyer, Craig Robertson, the three-year-old Colt trained by Bob Baffert has been in second place at the Breeders’ Cup Classic in Delmar a month ago. I have just completed 5 halon in my second training. Baffert said in a statement that the horse had a heart attack.