Posted by ESPN.com's Adam Rittenberg
Every Big Ten team circled and underlined a few questionable positions entering spring practice. Some of those concerns went away as young players blossomed and depth was built. Where did each Big Ten team get better this spring?
Here's a snapshot:
Illinois' running backs -- The development of sophomores Jason Ford and Mikel LeShoure this spring gives Illinois plenty of options at running back heading into 2009. Ford and LeShoure both improved physically and mentally and will compete with senior Daniel Dufrene to be the featured runner. Bottom line: Juice Williams' job should be easier.
Indiana's offensive line -- After being decimated by injuries last season, Indiana can feel a bit better about the front five. Tackle James Brewer might finally be reaching his potential, and center Will Matte impressed the coaches in the middle of the line.
Iowa's offensive line -- This group figured to be pretty solid no matter what, but Iowa got some help from a familiar name in the interior line. Dace Richardson might finally be healthy, and he worked with the first-team at left guard as Iowa tries to replace all-conference linemen Seth Olsen and Rob Bruggeman.
Michigan's offensive line -- Not a major surprise here, considering the Wolverines bring back all their starters from last season. But an extra year of experience plus several talented redshirt freshmen (Ricky Barnum, Patrick Omameh) joining the mix should pay off big time this fall.
Michigan State's quarterbacks -- The Spartans felt great about the progress of quarterbacks Kirk Cousins and Keith Nichol, who both threw for 357 yards and four touchdowns in the spring game. Head coach Mark Dantonio is in no rush to name a starter, but unlike many men in his position, he really has two viable options here.
Minnesota's wide receivers -- With superstar Eric Decker playing baseball, Minnesota needed to identify other solid options at receiver. Return specialist Troy Stoudermire emerged as a big-play threat, and quarterback Adam Weber liked what he saw from Brandon Green and Da'Jon McKnight.
Northwestern's running backs -- Of the three offensive skill positions where Northwestern loses starters, running back appears to be the most stable. Sophomore Jeravin Matthews emerged this spring and will push Stephen Simmons for the starting job. Northwestern has several options in the backfield after losing four-year starter Tyrell Sutton.
Ohio State's linebackers -- You can't deny all the production Ohio State loses in its defensive midsection, but the spring revealed several solid players who can step in. Austin Spitler and Tyler Moeller have waited their turn for the spotlight, and Brian Rolle had an excellent spring. With returning starter Ross Homan back on the outside, the Buckeyes should once again be solid.
Penn State's defensive line -- Despite losing three defensive ends with starting experience, Penn State should once again boast one of the league's top pass rushes. Sophomore Jack Crawford looks like the Nittany Lions' next superstar pass rusher and should fill the void on the edge with Eric Latimore and Kevion Latham.
Purdue's running backs -- Even with Jaycen Taylor still rehabbing from a torn ACL, Purdue got a lot better at running back this spring. Ralph Bolden came out of nowhere to steal the show in spring scrimmages (420 rush yards, 4 touchdowns), and Dan Dierking also looked impressive. The Boilers will need a viable rushing attack this fall, and they can feel a lot better about this group.
Wisconsin's wide receivers -- Dropped passes dogged the receivers throughout 2008, but the group definitely got better this spring. Nick Toon emerged as a potential No. 1 target with an excellent performance in practice, and Isaac Anderson, Kyle Jefferson and David Gilreath all showed progress at times.