4. Duke Williams brings an edge

It's very evident that former CFL WR Duke Williams knows this opportunity with the Bills might be his best shot at an NFL career. At the outset of practice when the team opened with special teams drills, Williams was on punt return and when he locked up with his blocking assignment he stuck with his block well beyond the whistle.

He then took that approach to the team segments of practice. Though he didn't win on every play, he made four receptions. His best came on a crossing route to the sideline where he had to jump and contort his upper body twisting back to the line of scrimmage while his feet were still pointed toward the sideline. But Williams was able to get both feet down inbounds for the reception.

Williams also had a couple of strong reps in one-on-ones with defensive backs. On an inside route he put his strength on display as he was able to throw the DB by him and come back to the ball to make the catch.

Now 27-years old, Williams off the field troubles at Auburn were a big reason why he went undrafted. He toiled in the CFL the last two years in Edmonton in an effort to prove he can be a playmaker for an NFL team.