Some of Dennis Byrd's former New York Jets teammates believe he may have suffered from CTE, and at least two of them have suggested to his widow that she donate his brain to the Boston University clinic that studies the brain disease.
Byrd, 50, was killed Saturday in a two-car collision about 30 miles outside Tulsa, Oklahoma. His football career ended in 1992, when he was temporarily paralyzed due to a broken neck.
For years, Byrd's former teammates had expressed concern about his behavior. He became detached from his closest friends on the team, not returning calls or messages.