Originally Posted by revischrist
It takes Rex a while to trust certain players on certain downs. It has little to do with their talent level or ability but more to do with their grasp of his defense and where to be in certain situations.
Coples showed amazing talent/skill last year and it took Rex a while to trust him on every down. Davis was significantly more raw so i am not surprised that Rex didn't trust Davis on "running" downs.
Edit to add: Playing on passing downs can me simpler in that you tell Davis to go out and cover TE X. On a running down, he has significantly more assignments (run and pass).
I'm just saying that is not normally the case in the nfl, rookies on D don't play as much on 3rd down where the stakes are higher.