Widely regarded as one of the top high school recruits four years ago, Campbell's college career didn't match the hype as he struggled to make much of an impact on the field.
After playing mostly on special teams and as a backup his first two seasons, he saw more action as a junior in 2011, but mostly as a reserve, recording 14 tackles, 2.5 tackles for loss and two sacks.
Campbell entered his senior season with the opportunity to earn a starting job and made his first career start in the season opener against Alabama. He finished 2012 with 11 starts, 44 tackles, 1.5 tackles for loss and 1.0 sack, mostly from the defensive tackle spot.
Although his Michigan career didn't live up to his lofty expectations out of high school, Campbell is an example of a player who might have a better pro career than college. He stood out during East-West Shrine Game practices due to his combination of size, strength and quickness to beat blockers with power or speed. Campbell has important motor and technique concerns, but the raw skills are intriguing, especially for teams that utilize three-man fronts.
Strengths: Looks the part with a tall, well-built frame, broad shoulders and a large wingspan (80 inches). Can carry a lot of weight on his frame without losing his athleticism. Quick feet for his size with the agility to collapse inside and disrupt the pocket. Natural power to bully blockers at the point of attack, reset and redirect. Takes up room and has the size/strength combination to command double-teams.
Weaknesses: Built like an oak door, but too often that door is blown open as he struggles to anchor off the snap. Doesn't appear to understand arm and hand technique, struggling to disengage blocks. Needs to improve his timing and motor; doesn't appear to always play with a full tank. Below average career production with just 5.0 tackles for loss and 3.0 sacks.
Compares To: Stephen Bowen, Washington Redskins