Don Nelson, the NBA's three-time Coach of the Year and a five-time champion, has died at the age of 86, his family said in a statement. As a player, Nelson played 11 of his 14 seasons with the Boston Celtics, winning five NBA championships before going on to coach after he retired from playing. Nelson also served as general manager for all three franchises and is one of two coaches in NBA history to have at least 250 wins with the three teams. "'Nellie' was one of the most innovative and influential coaches in NBA history and an iconic figure in Warriors history. "Don Nelson revolutionized NBA basketball through his fearlessness, ingenuity and deep conviction," NBA Commissioner Adam Silver said in a statement.