Here's a glance of how the rest of the Big Ten shapes up this week.

No. 9 Ohio State (3-1) at Indiana (3-1), 7 p.m., (Big Ten Network) Line: Ohio State by 17½. Series Record: Ohio State leads 65-12-5. Last meeting: 2006, Ohio State 44-3.

What's at Stake Ohio State wants to protect its ranking and keep hope alive for another Big Ten title. The Hoosiers, who fell just short of an upset at Michigan last weekend, need a signature win and wins in general to qualify for a bowl game.

Key Matchup Ohio State QB Terrelle Pryor vs. Indiana DEs Jammie Kirlew and Greg Middleton. The Hoosiers have the nation's best sacks tandem. Pryor has the size and the mobility to escape from Indiana's pass rush. It should make for an intriguing chess match when the Buckeyes have the ball.

Players to Watch Ohio State: S Anderson Russell. Kurt Coleman, arguably the Buckeyes top defender, has been suspended for Saturday's game. That puts Russell on center stage against an Indiana team that runs the spread offense and is capable of exploiting the middle of the field. Indiana: RB Darius Willis. After fumbling on his first college carry and then hurting his ankle, Willis has strung together two straight solid performances. If the Hoosiers have any chance of winning this game, they will need Willis to help them play ball control against the Buckeyes.

Facts & Figures Ohio State has 15 straight Big Ten road wins and 14 straight over the Hoosiers dating to 1988. ... The Buckeyes have back-to-back shutouts for the first time since 1996. ... Ohio State's defense ranks second in Big Ten allowing just 258.8 yards per game and tied with Indiana for the second-most sacks (11). ... ... Indiana hasn't been within single digits of Buckeyes since 1993, a span of 12 games. ... Hoosiers run defense ranks second in the Big Ten, trailing only Penn State, at 94.2 yards per game.

No. 15 Penn State (3-1) vs. Illinois (1-2), 3:30 p.m. (ABC/ESPN) Line: Penn State by 7. Series Record: Penn State leads 13-3. Last meeting: 2008, Penn State 38-24.

What's at Stake The Nittany Lions risk falling two games behind the Big Ten lead — held now by five 1-0 teams — after last week's loss to Iowa. Illinois is just trying to breathe some life into its season after blowout losses to Missouri and Ohio State cast doubt on whether this team could get to a bowl game.

Key Matchup Penn State QB Darryl Clark vs. Illinois LBs Ian Thomas and Evan Frierson. Clark completed just 12 of 32 passes against Iowa, threw three interceptions, was sacked twice and ran for 19 yards. Thomas has been a pleasant surprise in his first season as a starter, while Frierson enters his second week for injured defensive leader Martez Wilson.

Players to Watch Penn State: TB Evan Royster. The junior has 305 yards on 62 carries — fifth in the Big Ten — to lead the Nittany Lions and will be facing an Illini defense that gave up 236 yards rushing in a 30-0 loss last week at Ohio State. Illinois: QB Juice Williams. The Illini offense lives and dies with the senior quarterback, who hasn't thrown or run for a touchdown this season.

Facts & Figures Illinois wideout Arrelious Benn was a preseason All-America pick but has just five catches for 42 yards this season. ... The Illini have just one running back with more than 100 yards on the season, sophomore Jason Ford with 157. ... Outside of the 45 points it scored in a win over Illinois State, the Illini have scored just nine points this season. ... This will be Penn State's first road game of the season. ... Penn State's special team struggled with Iowa, giving up a blocked punt for a touchdown.

No. 13 Iowa (4-0) vs. Arkansas State (1-2), Noon, (ESPN2) Line: Iowa by 21 Series Record: First meeting.

What's at Stake Iowa will try to use this game, sandwiched between Penn State and Michigan, to get its passing game in gear and, hopefully, get some work for its backups. But after almost losing to FCS school Northern Iowa in the opener, the Hawkeyes know they can't take Arkansas State lightly. For the Red Wolves, a win would be a major boost heading into Sun Belt play.

Key Matchup Arkansas State QB Corey Leonard vs. Iowa's secondary. The Red Wolves rank just eighth among Sun Belt teams in passing offense, and the Hawkeyes have nine interceptions in four games. Arkansas State isn't going to manhandle Iowa in the trenches, so Leonard will likely have to make some big throws to give the Red Wolves a shot.

Players to Watch Arkansas State: RB Reggie Arnold. He and Leonard make the Red Wolves offense go. Arnold is averaging 6.3 yards per carry and has seven TDs in three games. Iowa: QB Ricky Stanzi. Is this the week Stanzi has his breakout game? Stanzi is completing a pedestrian 56.3 percent of his passes — he's also been victimized by drops — with five TDs and five picks.

Facts & Figures Iowa's eight-game winning streak dating to 2008 is tied with No. 2 Texas for the second-longest in the nation. Top-ranked Florida leads the country with 14 straight wins. ... Arkansas State is 0-9 against Top 25 teams under coach Steve Roberts, but the Red Wolves threw a major scare into then-No. 4 Texas in 2007, losing just 21-13. Arkansas State also beat Texas A&M 18-14 last season. ... Iowa has not allowed a rushing touchdown in 29 consecutive quarters. ... The Hawkeyes have outscored opponents 64-13 in the second half.

Northwestern (2-2, 0-1 Big Ten) at Purdue (1-3, 0-0), noon Line: Purdue by 6½. Series Record: Purdue leads 49-26-1. Last Meeting: 2008. Northwestern won 48-26.

What's at Stake Purdue desperately wants a win after dropping its past three games by a combined 12 points. The Boilermakers feel they can compete in the Big Ten after close calls against Oregon and Notre Dame in non-conference play. Northwestern doesn't want to fall to 0-2 in the league. The Wildcats are coming off losses to Syracuse and Minnesota.

Key Matchup Northwestern QB Mike Kafka vs. Purdue secondary. Kafka is coming off back-to-back 300-yard games and leads the Big Ten in yards passing. He faces a defense that ranks 93rd nationally in passing defense and 108th overall. Kafka also is a capable runner, though he hasn't done much this season.

Players to Watch Purdue: RB Ralph Bolden. He is the top rusher in the Big Ten and the No. 7 rusher in the nation with 488 yards. He has had limited carries the past two weeks, but still averages 6.2 yards per attempt. Bolden also has nine catches for 133 yards. He had three touchdowns against Oregon. Northwestern: WR Zeke Markshausen. He has 15 catches for 156 yards the past two weeks as Kafka's favorite target. He had six catches for 70 yards in the 35-24 loss to Minnesota last week and nine catches for 86 yards in the 37-34 loss to Syracuse the previous week.

Wisconsin (4-0, 1-0) at Minnesota (3-1, 1-0), noon Line: Minnesota by 2½. Series Record: Minnesota leads 59-51-8. Last Meeting: 2008, Wisconsin 35-32.

What's at Stake The Gophers are eager to host the Badgers at their new TCF Bank Stadium for the first time. These games for Paul Bunyan's Axe at the Metrodome were played in front of half-and-half crowds, far from campus. Minnesota went 6-7 against Wisconsin over 27 seasons playing at the Metrodome and has not won in this series since 2003. After a disappointing 7-6 finish, the suddenly offensively balanced Badgers are unbeaten after four home games.

Key Matchup Wisconsin TE Garrett Graham vs. Minnesota's linebackers. Graham caught three of the four touchdown passes thrown by Scott Tolzien in a victory over Michigan State last Saturday. Minnesota seniors Lee Campbell, Simoni Lawrence and Nate Triplett form the backbone of an experienced defense that's held up relatively well against some tricky, talented offenses so far. Triplett leads the nation with 33 solo tackles.

Players to Watch Wisconsin: Tolzien. After struggling to find a passing game last year, the Badgers are excited about the junior's emergence. They haven't thrown for so many yards through four games since 2003. Minnesota: S Kim Royston. He's a transfer from Wisconsin paying his own way to go to school back home after sitting out last season because of Big Ten rules.