This defense lacks physicality. They're too soft.
I believe it has to do with the offensive system we run. The offense is some version of the spread....not sure even what to call it. So our defense never practices against a smash mouth NFL style offense, like Rutgers, Pitt, Ucon, Miami of years past, etc. In practice they never learn to be physical, instead we rely on our speed, and we don't have enough talent to overcome it. When we play teams like this we always struggle. CJL teams were more physical because they played with passion, albeit some times very undisclipined. This defense plays like its coach, soft and conservative.
Holtz needs to get some coaches in here from the NFL to learn how to be more physical.