How Does Zimmer's Defenses Consistently Rank Among the Best in the League?

Mike zimmer's defenses consistently rank among the best in the league at opponent third down conversion percentage, including this year's number one ranking of 29%. He even manages a top ten ranking in 20 20, despite injuries and a lack of talent. Once he knows your rules on how you block things and the calls you make, then he designs blisses to attack those rules. So he neutralizes you, basically, and you have no chance. And that's why he's so effective, as he brings pressure, he doesn't always bring pressure, he backs off with pressure.