Biography: Former walk-on who started the past three seasons at both guard and center.

Positives: Hardworking yet athletically limited blocker who gets the most from his ability. Bends his knees, blocks with leverage and plays with good quickness. Better than average skills blocking in motion. Keeps his head on a swivel and works well with teammates. Effective with the shotgun snap.

Negatives: Lacks size and strength and gets run over by opponents. Struggles to adjust.

Analysis: Johnson is a versatile lineman with limited upside for the next level yet his approach to the game and the ability to line up at several interior blocking positions gives him an outside chance to catch on as an inexpensive backup.

Projection: FA