Those of us that are old enough will remember Mike Curtis well. He was taken by the Hawks in the 1976 expansion draft. The reported cause of death was complications of CTE, resulting from repeated blows to the head.
https://www.usatoday.com/story/sports/n ... 111579036/
My fondest memory of Curtis comes from when he was a MLB for the Baltimore Colts. During a game, some fan comes running onto the field and grabs the game ball and starts heading off. Curtis comes by and with a forearm club, clocks the guy and sends him sprawling to the ground.