Limas Sweed, Texas (WR): Must re-establish dominance after missing seven games in his senior season due to a wrist injury. Must show burst and ability to separate vs. man coverage. First round money at stake. (Photo by Brian Bahr/Getty Images)

Colt Brennan, Hawaii (QB): Let's level the playing field and see what this guy is! Is he the QB that dominated his conference the last three years or the QB that looked broken and lost against Georgia? I would submit that neither was a fair evaluation and I'm looking forward to watching how his game transfers in Mobile. (Photo by Matthew Stockman/Getty Images)

Chad Henne and John David Booty, Michigan, USC (QBs): Two old war horses will compete on a daily basis to show the NFL that they are healthy and worthy of first-day consideration. Both QBs struggled with health issues throughout the year but saved their best football for the Bowls. I like Henne to emerge as a dark horse candidate behind Matt Ryan. (Photos by Doug Benc/Getty Images and Ben Liebenberg/NFL)

Jordy Nelson, Kansas State (WR): Exploded onto the national scene with 122 receptions and 1,606 yards. Most of his routes were verticals, crosses and bubble screens. The former QB/DB is still raw but must show the "suddenness" to beat press coverage and a more refined ability to get in and out of NFL style routes. (Photo by Brian Bahr/Getty Images)

Chris Johnson, East Carolina (RB): Extraordinary speed will guarantee attention from all 32 teams. Johnson can stick his foot in the ground, cut and accelerate better than any senior RB in the draft. He also brings legitimate value in the return game. ... The question he must answer -- is he tough enough to lower his pad level and run between the tackles when necessary? (Photo by AP)