Legendary Colts tight end John Mackey dies at 69 By Mike Klingaman -- July 7, 2011 John Mackey changed the game of football on and off the field. The former Baltimore Colt brought grace to a position that had been known for its brutality, and he made the first real headway in the NFL players' fight to earn a more equal share of the pie. That battle continues as the NFL lockout drags on this summer. Mr. Mackey, one of the game's great tight ends, a Hall of Famer and one-time president of the NFL Players Association, died Wednesday of frontotemporal dementia, a disease he had battled for 10 years, at Keswick Multi-Care Center in Baltimore. He was 69. Click here to read the rest of this article.