Tyler Hilinski was a promising college football quarterback at Washington State University who died by suicide earlier this year at the age of 21. Now his parents, Mark and Kym, are speaking out about mental health and Chronic Traumatic Encephalopathy (CTE) in a new Sports Illustrated documentary. “It was a shock to … find out that he had it, and to realize that the sport that he loved may have contributed to that diagnosis,” the mother tells TODAY’s Hoda Kotb.