Been a lurker here for a while and figured I might as well chime in about his 40 time. I think you see the differences in times because they are running on field turf in cleats. I know that at the UW they are tested on the indoor track with the same laser system and can wear track shoes. The combine is notorious for slower times with the soft surface and pressure to perform.

With that being said I always thought the 40 time was bogus. Once in the league they are never tested on it again. Plus, I have watched guys that run high 4.8's out run guys that run 4.3's during a game. Some guys just have the feel. Tuiasosopo was a prime example when he played for the Dawgs.