At Michigan's pro day, Campbell ran the 40-yard dash in 5.22 and 5.15 seconds. He had a 27-inch vertical jump and an 8-foot-11 broad jump. His short shuttle time was 4.71 seconds and three-cone time was 7.28 seconds. Campbell had 35 strength lifts of 225 pounds.
In high school, Campbell was a three-year starter at offensive tackle and a two-year starter at defensive tackle for Cass Technical (Mich.) High School.
Future Hall of Famer
A once-in-a-generation type prospect who could change how his position is played
An impact player with the ability/intangibles to become a Pro Bowl player. Expect to start immediately except in a unique situation (i.e. behind a veteran starter).
A quality player who will contribute to the team early on and is expected to develop into a starter. A reliable player who brings value to the position.
A prospect with the ability to make team as a backup/role player. Needs to be a special teams contributor at applicable positions. Players in the high range of this category might have long-term potential.
A player with solid measurables, intangibles, college achievements, or a developing skill that warrants an opportunity in an NFL camp. In the right situation, he could earn a place on a 53-man roster, but most likely will be a practice squad player or a camp body.