BIO: All-Conference selection the past three seasons at both left tackle and guard.
POSITIVES: Strong, small-area blocker with a solid lineman's build. Explosive off the snap, effectively uses angles and controls opponents once engaged at the point. Seals opponents from the play with good body positioning.
NEGATIVES: Struggled at left tackle and lacks footwork, adjustment and blocking range. Marginal skills in motion.
ANALYSIS: A durable defender through most of his college career, Shack has the abilities to eventually develop into a starter on the NFL level inside at guard.