Former NFL and Iowa safety Tyler Sash died from an accidental overdose after mixing two powerful pain medications, and a history of painful injuries was a contributing factor, a medical examiner said Tuesday. Additional studies will look at whether Sash, 27, suffered from chronic traumatic encephalopathy, a brain disease caused by repetitive trauma that has been found in several former NFL players. The results will be available in eight to 12 months, according to a statement from the Iowa State Medical Examiner's office. More...