OKLAHOMA CITY (AP) - Oklahoma's medical examiner says the Oklahoma State University basketball player who died in July following an outdoor team workout suffered from an enlarged heart and died of natural causes. The Office of the Chief Medical Examiner released Friday the findings of the autopsy on 22-year-old Tyrek Coger. The forward collapsed July 21 following a 40-minute team workout on the football stadium stairs when the temperature was 99 degrees. The autopsy report says Coger died due to an enlarged heart.