His approach, as evident in two Super Bowl titles and all those wins, worked. For decades.
Shula, who died on Monday at 90, took over the Baltimore Colts when John F. Kennedy was president and retired from the Miami Dolphins during the Bill Clinton administration. He was the same relentless taskmaster throughout his 33 seasons as a head coach, an innovator who found ways to win with stars and unsung stalwarts, like the so-called No-Name Defense of the early 1970s. He drove his players hard in practice and demanded they prepare so thoroughly that they could adapt to any situation during games.
Article source: https://www.nytimes.com/2020/05/04/sports/football/don-shula-deathmiami-dolphins.html