Prolifically bad defenses typically get coaches fired.
This offseason, six of the schools that ranked among the bottom 10 in total defense last year hired new defensive coordinators. Among Power 5 programs, six of the eight worst scoring defenses have new coordinators going into 2017. The coaches who did survive were all first-year DCs, with one exception.
Texas Tech ranked dead last in college football in both of those defensive categories last season. The Red Raiders' defense ranked bottom-five nationally in 2015. And yet, defensive coordinator David Gibbs is back for Year 3.
A whole lot of change is needed after a 5-7 season, no question, but coach Kliff Kingsbury never believed a new hire was the answer.