Aspiring player turned coach turned broadcaster turned namesake of a video game empire, John Madden reinvented himself numerous times and in doing so, became one of the most important people in the history of football.
He also, of course, was the namesake for the Madden NFL video games.
John Madden started his career as a football player.
John Madden was a football guy to his core, and he was somehow good at everything he tried.