Bruce Irvin, DE West Virginia
Bruce Irvin was a freak in 2010, posting 14 sacks and 14 tackles for loss. This season, however, he's been relatively quiet, only posting 2.5 sacks.
It looks like teams have figured him out and he may not be the player everyone thought he was. Still, he deserves a mention.
Shane Skov, LB Stanford
Skov was great last season, posting 11.5 tackles for loss and 7.5 sacks. He looked like he would be just as good this season, but he sustained a season-ending injury early on. He posted four tackles for loss and 1.5 sacks in two full games.
It's impossible to evaluate Skov accurately at this point, but I think he'll do fine at the combine and get the attention of more than one team if he doesn't return.
Vontaze Burfict, MLB Arizona State
Vontaze Burfict may be the best defensive player in the draft, and when he wants to, he can sack the quarterback as well as anyone else. He has four sacks this season and will likely finish with a few more.
However, he is a middle linebacker, first and foremost, and they do not get drafted to be pass-rushers. Still, he's too good to not mention.