Ten things to keep your eyes on in the four Big Ten games on Saturday:
1. Strength vs. strength for the Spittoon: The Indiana-Michigan State game might not be the most-hyped matchup of the weekend, but if you like irresistible force/immovable object conflicts, this one's for you. The Spartans lead the FBS in total defense, rush defense and passing efficiency defense. The Hoosiers, meanwhile, are ninth nationally in total offense, 10th in passing yards and 11th in scoring. Indiana scored the first 17 points of the game last year in Bloomington before falling 31-27. This year's Old Brass Spittoon winner will go to the team that better parlays its strengths and its corresponding weaknesses (Michigan State's defense, Indiana's offense).
2. Inexperienced travelers: Both Indiana and Nebraska have had comfortable early-season schedules, as each has played its first five games at home. Both teams go on the road for the first time this week, with the Hoosiers in East Lansing and Nebraska visiting Purdue. Bo Pelini said the schedule worked out well for his young defense to gain some less stressful experience, but he still will be leaning on youthful players both on defense and at quarterback with redshirt freshman Tommy Armstrong Jr. Indiana coach Kevin Wilson said his team uses a lot of hand signals on offense, so he's not too worried about crowd noise. Michigan also gets easily its toughest road test at Penn State, which should be a much more intimidating atmosphere than UConn's Rentschler Field.
3. Heartbreak Hotel, aka Camp Randall Stadium: No team has suffered more gut-wrenching close losses in the past 2½ years than Wisconsin. But at least Northwestern can relate. Both teams might be playing for national titles if the NCAA shortened games to 55 minutes. On Saturday, Team 5:03 travels to the team that has yielded more Hail Marys than the pope's rosary beads. Both the Wildcats and Badgers are also coming off tough losses to Ohio State, with Wisconsin having two weeks to lick its wounds. The winner can still dream about a BCS bowl. The loser will be in serious catch-up mode. Is there any way it can end except on a key play in the final minute?
4. Northwestern's run defense vs. Wisconsin's rushing attack: The Wildcats had trouble stopping Ohio State's offensive line and bulldozing back Carlos Hyde as the Buckeyes racked up 248 rushing yards in last week's 40-30 win. Northwestern players and coaches say it was more a matter of tackling and execution than a size and strength issue. They will have to do a much better job this week against Wisconsin, which is averaging 300 rushing yards per game. By all accounts, star tailback Melvin Gordon's left knee is fine after he injured it against Ohio State two weeks ago, and James White ran for 134 yards the last time these two teams played, in 2010 (yes, he's been around a long time). The Badgers ran for 329 yards in that last meeting three years ago. The teams have changed, but Wisconsin's approach hasn't. Northwestern had better hope its run defense has improved.
5. Penn State's response: Bill O'Brien has been jovial in many of his news conferences this year, but he was clearly not a happy man on Tuesday. O'Brien was terse in his answers with the media and basically refused to address anything regarding the Indiana loss or the team's scholarship situation. It's understandable why he wouldn't want to relive the program's first-ever loss to the Hoosiers or dwell on problems, because he needs his team focused on 5-0 Michigan, which comes to Beaver Stadium for a 5 p.m. game. The game is sold out and will be a White Out, though the enthusiasm from the fans might be a little less than before last week's loss. It remains to be seen whether the team will match O'Brien's feistiness and come out with a much better effort this Saturday.
6. Allen Robinson vs. Blake Countess: Penn State's Robinson is the reigning Big Ten receiver of the year and is gunning for another trophy after his 12-catch, 173-yard day against Indiana last week. Michigan's top job on defense is to find a way to stop him, and that's where cornerback Countess should come in. Countess has four interceptions this year, tying him for the national lead. The Wolverines likely will need more than just Countess to slow down Robinson, and Penn State continues to search for a complementary weapon in the passing game for quarterback Christian Hackenberg.
7. Ryan's return? Michigan linebacker Jake Ryan has been itching to return from the torn ACL he suffered in the spring, and he has been medically cleared to play on Saturday in State College. Coach Brady Hoke appears hesitant to put his star back in there, fearing the risk of further injury. Hoke said Wednesday that Ryan has practiced as a backup. The Wolverines' defense has been light on big-play ability, which Ryan brings to the table in spades. Getting him back would provide a physical and emotional boost for Michigan.
8. Etling's big day: In what has been a sorry season so far for Purdue, at least quarterback Danny Etling provides reason for optimism. After making his college debut two weeks ago against Northern Illinois, the freshman gets his first start Saturday vs. Nebraska. Head coach Darrell Hazell says Etling's strong arm opens the whole field for the Boilermakers' passing game, and he hinted at offensive changes made during the bye week to suit Etling's skills. Nebraska's defense did a good job slowing down Illinois' passing attack last week but still has vulnerabilities. Etling had better watch out for cornerback Stanley Jean-Baptiste, who -- like Countess -- has four interceptions this season.
9. Two steps forward for Spartans' passing game? Michigan State had its most encouraging offensive performance of the season in last week's 26-14 win at Iowa. Quarterback Connor Cook made good decisions en route to a 277-yard day, and even better for the offense, receivers Bennie Fowler and Macgarrett Kings Jr. showed off excellent playmaking ability. While not exactly an Oregon-esque outburst, last week's offensive showing was the kind the Spartans and their fans had been waiting to see for more than a year. The key will be whether that is a repeatable performance, especially this week against a below-average Indiana defense.
10. Well, hello again (and for the first time): One of the most aggravating byproducts of conference expansion is the gap between games for some high-profile programs. Michigan hasn't played Penn State since 2010, while Northwestern and Wisconsin also haven't met in three years despite the short distance between the two schools. That's why it's good to see those two games on the schedule this weekend. With the new division alignment starting in 2014, the Wolverines and Nittany Lions will be paired in the East, while the Wildcats and Badgers will be in the West. Perhaps this will be the start of some renewed rivalry tensions in both series. Meanwhile, Nebraska plays Purdue for the first time as a Big Ten member. The schools have only played twice before and not since 1958 in West Lafayette. Scouting takes on added importance in all three of those games, as these teams have few players and coaches who have ever faced one another on the field.