Another guy who's adding some muscle and a guy who will have a great shot this spring at early some playing time in the fall is walk-on defensive back Michael Williams. The cornerback, who nearly played in 2013, but the shoulder injury just set him back too far and it was unclear how his playing, even as a walk-on, would have impacted the Vols' numbers. But he's going to get a real shot in the spring. His speed is something that defensive backs coach Willie Martinez always talks about and Martinez is interested to see if Williams can physically hold up this spring with a lot of contact.