As part of an ongoing series, NittanyNation will preview a different position leading up to the season opener against Syracuse on Aug. 31. Up today: Linebackers.
Projected starters: Mike Hull (2012 stats: 58 tackles, four sacks, one interception, two fumble recoveries, one blocked kick), Glenn Carson (85 tackles, three tackles-for-loss) and Nyeem Wartman (one tackle, one blocked kick)
Key losses: Michael Mauti (95 tackles, three interceptions, three forced fumbles) and Gerald Hodges (109 tackles, 8.5 tackles-for-loss, two interceptions, nine pass deflections)
Next in line: Ben Kline could've challenged Wartman for the starting job if it weren't for a nagging shoulder injury, but he's missed a lot of time after offseason surgery. (Bill O'Brien said Kline will "hopefully" be ready for the season opener.) He's still clearly the top backup here, but he'll have to shake off rust quickly to be effective.
Outside of Kline, the staff will be forced to turn to a raw Gary Wooten who redshirted last season. And then there's always true freshman Brandon Bell and the run-ons. Safety Stephen Obeng-Agyapong will also be utilized at times this season, likely replacing Wartman on passing downs, and could possibly play more weakside if injuries become a pressing concern.
What to expect: If there's one position that concerns O'Brien, when it comes to depth, it's linebacker.
ESPN's coach of the year has echoed that sentiment throughout the offseason and training camp. There are two solid starters here, in Carson and Hull, but every other linebacker is a question mark. Wartman flashed a lot of potential in two contests last season before a season-ending injury, and he looks to become a four-year starter. But can he be effective with such limited experience?
Even if does play well, the Nittany Lions are one injury away from a disaster at linebacker. Wartman can be good this season, but there's a lot less faith in those backups. Kline missed the spring and the summer, and he might not be ready to go in time for Week 1. If PSU has to rely on Wooten or someone else here, that player immediately becomes the Achilles' heel of this defense.
Recruiting trail: The Nittany Lions seemed to be in a lot better shape earlier in the summer. Sure, they still have four-star MLB Troy Reeder (Wilmington, Del./Salesianum), who is just on the outside of the ESPN 300, but they also basically lost two other linebackers.
Since July, the Lions have parted ways with Class of 2013 LB Zayd Issah (Harrisburg, Pa./Central Dauphin) after another run-in with the law and three-star LB Jared Wangler (Warren, Mich./De La Salle), who decommitted in favor of Michigan. That makes LB a much bigger priority now.
Syracuse commit Jason Cabinda (Flemington, N.J./Hunterdon Central) could be the next in line for an offer. He impressed the staff during a June camp, and PSU badly needs to take another linebacker now.
Best-case scenario: Wartman shows he'll be the next big thing at Linebacker U and earns an honorable mention on the All-Big Ten team. There's only a slight drop-off in production from last season, but the linebacking corps remains one of the team's strengths as Carson and Hull form to become the best duo in the conference.
Worst-case scenario: Carson or Hull go down early and miss the season, while Kline's shoulder continues to bother him throughout the year. Wooten or Bell are then plugged in before they're ready, and the group of linebackers struggles as a whole and brings down the entire defense.
Top position question: What kind of linebacker will Wartman be? He's a run-stuffer, first and foremost, which is why the Lions will likely plug in a safety at his position on passing downs. It'll basically be the 2013 version of the "Roadrunner" package.
But that doesn't mean quickness is a problem for Wartman. He boasts great straight-line speed, and the Florida Gators recruited him heavily for that very reason. He also garnered a reputation in high school as a hard-hitter, and that was clearly well-earned.
During the Blue-White Game, he diagnosed a screen pass and blew up the intended receiver in the hit of the game. (He was a bit disappointed in himself about that hit because, although the receiver crumpled to the turf, he didn't wrap up the target because he "was licking my chops too much.")
It would come as no surprise if Wartman forced a few fumbles. He'll likely end up as a four-year starter for Penn State. This might not be the year where PSU fans start buying No. 5 jerseys en masse -- but it should happen by 2014 or 2015.