Spring forward: Guards, center analysis

With national signing day in the books, the next big date on the Ohio State calendar as it continues working toward an encore for an undefeated season in 2013 is spring practice. Before those workouts begin, BuckeyeNation will take a look at each position to see where the roster is at — and where it’s going. INTERIOR OFFENSIVE LINEMEN Who’s back: The central nervous system of the offense returns completely intact, starting with the anchor who will be looking to build off a banner year in the middle of everything.