Block-eating nose tackle with girth, power and leverage to play the role of tree stump against the run in an odd or even front. Shelvin can engage double teams with some effectiveness to allow linebackers to run free, but he doesn't display much range to make plays. He can be inconsistent in controlling and shedding single blocks in a timely fashion. He would benefit from better conditioning to improve both his stamina and quickness. He's unlikely to ever be much of a playmaker or pass rusher, which could limit his draft value, but his stout presence in the middle should carry value for teams looking to tighten up against the run.
