It's been beaten to death in sports pages all across America - America's Team had a terrible, awful, historically bad defense in 2020. The Dallas Cowboys couldn’t stop grandma using her walker; something had to be done. Usually it’s the coach that goes and not the players, but the Cowboys did a little of both for 2021. They swapped out beleaguered defensive coordinator Mike Nolan for Dan Quinn, the man who helped shape the Legion of Boom in Seattle. They also spent their fist six draft picks on the defensive side of the ball and brought in a handful of defensive free agents.