|I'm sure this comes as no surprise, but Jordan Kovacs will be Michigan's top returning defender, according to my grades|
(image via Maize and Blue Nation)
I don't think it's any coincidence that defensive linemen seem to rocket to the top of the grading scale, while defensive backs linger toward the bottom. By the nature of the sport of football (and the angles that television uses), defensive linemen and linebackers are more involved in the game. And when the ball is in the air, roughly 60% of the time it's going to result in a completion and an angry defensive back.
Obviously, this three-game sample is not indicative of the entire season. For example, J.T. Floyd's best game was probably against Illinois, which isn't a game I graded. On the flip side, Frank Clark ended up with a +11 largely because he was outstanding in the Virginia Tech game.