Carnahan is an experienced player with 33 career starts, going into his senior season. He's a very good pass protector, with quick feet, plays with good leverage, and shows surprising strength against the bullrush. He plays with a nasty attitude, which is always a bonus in an offensive lineman, and has cut his blocking teeth in a high-powered passing offense.
NEGATIVES
He's undersized and, although he plays with great technique, will need to bulk up to be successful in the NFL. Also, he's not a great run blocker, lacking the lower body strength to drive defenders off the ball. Carnahan needs to play more consistently, and not take plays off.
FINAL WORD
He's more of a technician than he is a mauler, but plays like he weighs 350 lbs. He's never shown much in the way of the road grader mentality when it comes to run blocking, and needs to show more consistency, but overall he's a very good player, especially if he can put on 10 or 15 pounds and get stronger in the run game. If he can, he'll move up draft boards in a big way.