BIOGRAPHY: Former reserve offensive lineman who became a starter at the split-tackle position as a senior.
POSITIVES: King-sized blocker who works best in confined quarters. Stays square, is strong at the point and controls opponents once engaged in a block. Plays with a nasty attitude, always looks for someone to hit and helps out teammates.
NEGATIVES: Haphazard in his movements and does not play with much balance. Not light on his feet, lacks skills sliding out to protect the edge and is slow to adjust. Needs to shed a few pounds.
ANALYSIS: A better-than-advertised athlete with the size and strength to play at the next level, Shackleford is a developmental prospect who could surprise if he hits on all cylinders.