Check out the top 10 things we learned during the college football weekend:
1. Ohio State proves the Buckeyes are the team to beat in the Big Ten. Ohio State scored 13 points in the final eight minutes to beat Penn State Saturday, highlighted by a 96-yard game-winning drive engineered by quarterback Dwayne Haskins. It's the second time this season the Buckeyes managed two second-half comebacks (TCU) and they have a clear path to a Big Ten title.
2. Penn State will be thinking about that fourth-down call for quite some time. After watching Trace McSorley carve up Ohio State's defense for 461 total yards, it's inconceivable Penn State coach James Franklin would chose to go with a handoff to running back Miles Sanders on a critical fourth-and-5 with 1:22 left in the game. Sanders was stuffed, sealing an Ohio State win, and the Nittany Lions must face another year of wondering what-if as they wait to see how the Big Ten plays out.
3. Clemson demonstrated why the Tigers are an elite team. Just about everybody had written off the Tigers after quarterback Trevor Lawrence left the game against Syracuse with an injury, but coach Dabo Swinney's team leaned on its stout defense and a punishing rushing attack to help backup Chase Brice lead the team back from a 16-7 halftime deficit to remain undefeated and in the playoff hunt.
4. Notre Dame looks like a legitimate playoff contender. The decision to make a switch at quarterback from Brandon Wimbush to Ian Book has paid off handsomely for the Irish. Book has accounted for nine touchdowns and the offense is averaging more than 500 yards the past two games. Couple that with an above average defense and manageable schedule and things are looking up in South Bend.
5. It's deja vu for the Pac-12. For a conference desperate to rebound after being shut out of last year's College Football Playoff semifinals, the Pac-12 did itself no favors after Stanford lost to Notre Dame, leaving unranked Colorado as the league's only undefeated team. Washington and Stanford appeared to have the league's best chance of earning a semifinal bid and both already have one loss, leaving things on shaky ground.
6. West Virginia could pose the biggest threat to Oklahoma in the Big 12. The Mountaineers are 4-0 for the first time since 2016 and should be heavy favorites until they have to face Texas, TCU and Oklahoma State in November before the regular-season finale against the Sooners on Nov. 23. Oklahoma, meanwhile, has tough matchups looming against Texas, Oklahoma State and Texas Tech.
7. Alabama isn't perfect. It's true. The No. 1 Crimson Tide missed two field goals during their 56-14 blowout of Louisiana. Outside of that, it's hard to point out any faults on a team that surpassed 500 yards for the fifth consecutive time this season and appears to only be getting stronger each week. It's easy to see why many believe Alabama is a lock for its fifth appearance in the playoff semifinals.
8. Dan Mullen gets the last laugh. It was an emotional day for the Florida coach, who returned to Starkville to take on his former Mississippi State team. Despite the hostile crowd, the Gators who pulled out a 13-6 win over the Bulldogs. Florida is getting hot at the right time, with the team preparing to host LSU this week before a critical showdown with rival Georgia in two weeks.
9. Kentucky is an SEC East title contender. Don't laugh, the Wildcats are for real. Just ask Florida, Mississippi State and South Carolina, who found out the hard way. Kentucky has played with a massive chip on its shoulder all season and it has helped fuel strong play by running back Benny Snell and linebacker Josh Allen, who've led the program post its best start in the SEC since 1977.
10. It's not always easy being the new guy. Scott Frost and Chip Kelly were two of the hottest coaching candidates during the offseason, but things haven't exactly gone as planned for both as their respective teams, Nebraska and UCLA, are two of four winless teams remaining at the Football Bowl Subdivision level.