Backup guard Antonio Underwood is out at least 6 months with an ACL injury.

Spring practices are well underway, and there are a few surprises in the defensive backfield. We'll explore the depths of that position and see who's going to fill open spaces such as that second corner spot, and who the new star could be.

Another point of emphasis this off-season for Urban Meyer and his defensive staff was the linebacking corps, which includes one stud potential future first-rounder – and a lot of question marks. Here's how the depth chart looks heading towards the 20

We've explored the depths of Ohio State's offense. Now, we'll take a look at the work Urban Meyer and his staff have built up on the defensive line – the youngest position on the team, but the group with the most potential.

We end our offensive previews where it all begins for any offense: the 2013 offensive line. Who will take Reid Fragel's spot, and can any of the freshmen battle their way into early playing time?

With another top 5 recruiting class set in stone, we continue looking ahead to Urban Meyer's second Ohio State team, the 2013 Buckeyes. This week, we break down the tight ends and fullbacks - the Swiss Army knives of an Urban Meyer offense.

With another top 5 recruiting class set in stone, we continue looking ahead to Urban Meyer's second Ohio State team, the 2013 Buckeyes. This week, we break down the wide receivers and what Ohio State fans can expect from the outer playmakers.

This week, we break down the 2013 Ohio State running backs and what Buckeye fans can expect from one of the nation's deepest position groups.

With another top 5 recruiting class almost set in stone, we begin looking ahead to Urban Meyer's second Ohio State team, the 2013 Buckeyes. This week, we break down the quarterbacks and what Ohio State fans can expect from one of the nation's best.