Last season: The interior was a strength in 2013, with 318-pound DaQuan Jones anchoring it. Jones earned the team's MVP award by routinely taking on double teams and still leading PSU with 11.5 tackles for loss. He also ensured that neither of Wisconsin's tailbacks reached the 100-yard mark Penn State's upset over the then-No. 15 Badgers. Kyle Baublitz rotated in with Johnson on the other side and put up respectable numbers (3 sacks, 1 blocked kick) before deciding to move on with a teaching career. The line was the defense's strong point last season.
What's missing: Experience. Jones is heading to the NFL, Baublitz is heading to State College Area High, and Johnson is the only returning defensive tackle who saw serious time at the position last season. Put simply, there are a lot of question marks. Former coach Bill O'Brien was set on taking a junior college defensive tackle because he was in such desperate need of finding an immediate contributor, so it wouldn't be surprising to see new coach James Franklin plug in a newcomer right away.
Moving forward: Defensive end Anthony Zettel could move inside and, in a lot of ways, that would help quiet those questions surrounding experience. But he's only 258 pounds right now, so of course there's the question of his weight. Defensive line coach Sean Spencer likes to rotate a lot of players on his line, so we could see more of a lot more combinations this season. Johnson is really the only lock, but he has a bright career ahead of him.
The staff needs to decide quickly what it wants to do with Zettel and, from there, find at least one more DT who can separate himself. Gaia played in 11 games last season and likely holds the slight edge right now, but Dowrey's not that far behind. Barney and Cothren are both darkhorses, and a lot of eyes will be on them in the spring.