|It's possible few players helped themselves more at the NFL combine than Irvin, who turned heads with his blazing 40-yard dash time of 4.50 seconds - easily the fastest of any player listed as a defensive end. Irvin's future could lie as a pass-rushing end in a 4-3 defense, although he may profile better as an outside linebacker in a 3-4 set. Either way, quarterbacks will want to keep an eye on him after he racked up 22 1/2 sacks in 26 career games at West Virginia, finally coming into his own after some rocky times during his teenage years. Irvin never finished high school and even spent some time in a juvenile detention center before earning his GED and attending junior college, then making the most of his opportunity in Morgantown. If NFL teams are convinced his off-the-field problems are in the past, Irvin's impressive rise could result in a first-round selection, although he's not without some football-related doubts. He doesn't have much experience stopping the run, and he'd likely need to add significant weight to be an every-down player in the front seven. Irvin's tremendous speed and athleticism, though, give him a great chance to make an immediate impact on passing downs at the next level, and he looks like an attractive early-round option for a club emphasizing increased pressure on opposing quarterbacks.