Posted by ESPN.com's Adam Rittenberg
Welcome to the first edition of internal affairs, which will take an inside look at five key developments around the Big Ten every Wednesday during the season.
Penn State -- Josh Gaines moved from defensive end to defensive tackle on several plays against Coastal Carolina and could continue to do so the rest of the season. It freed up Aaron Maybin (two sacks) for more pass-rushing opportunities, though Jerome Hayes got most of the playing time at Gaines' usual end spot. The Lions are a bit thin at tackle after the summer dismissals of Chris Baker and Phil Taylor, and the broken leg suffered by Devon Still. Gaines, the team's most experienced defensive lineman, collected four solo tackles in the opener.
Iowa -- Junior A.J. Edds is without a doubt Iowa's best linebacker, but his coaches are resisting the temptation to move him to the middle spot, where most top backers play. Edds says he can play all three linebacker positions but feels most comfortable on the strong side, where he can showcase his playmaking skills. "My natural home is the outside backer spot," said Edds, who recorded a safety and deflected a pass that led to an interception against Maine. "It's kind of a hybrid, playing on the D-line over a tight end a lot of the time, but you're also playing out there in coverage over some of the wide receivers. If the coaches didn't have faith in the other backers, I'm sure they would put me in the middle."
Indiana -- Mitchell Evans' days as a nomad appear over as the sophomore has found a home at wide receiver. Kellen Lewis' return from suspension and the decision to move Evans from quarterback to wideout is paying off already. As top receiver Ray Fisher battles a shoulder injury, Evans, a former safety, can step in and contribute. His size (6-3) and excellent hands give Indiana another option in the passing game. Also keep an eye on freshman Damarlo Belcher, who Lewis likens to a young James Hardy.
Michigan State -- The Spartans' depth on the defensive line and in the secondary helped produce lofty preseason expectations, but they're struggling to find capable bodies at running back and along the offensive line. Coach Mark Dantonio will use Javon Ringer as much as possible, but A.J. Jimmerson was held out of the Cal game and Ashton Leggett didn't touch the ball. Ringer is a horse, but he'll wear down fast if the Spartans don't find another back. The Spartans can't afford attrition up front, where Mike Bacon is listed as a possible starter at two positions (center and left guard).
Northwestern -- Don't be surprised to see junior offensive lineman Desmond Taylor in the starting lineup Saturday against Duke. Taylor has earned rave reviews throughout preseason camp and performed well in place of injured right tackle Kurt Mattes against Syracuse. Now Taylor could take Mattes' job or the one belonging to guard Joel Belding. Though Mattes and Belding are Northwestern's only two returning starters on the line, Taylor has plenty of experience and will see significant time at tackle or guard.