Fueled by five takeaways, the Fighting Illini put on a second-half masterclass. They outscored Duke 31-6 after the break, leaning on that defense while quarterback Luke Altmyer threw for 296 yards and three scores. Illinois is lurking as a threat to top-tier Big Ten programs Ohio State, Penn State and Oregon.

Who belongs where in the ESPN top 25 college football power rankings entering Week 3, with some notable changes near the top of the poll.

Toughest remaining game: Oct. 18 vs. USC. ESPN's FPI projects Notre Dame will win out and has the second-best chance to do so behind Ohio State. The rivalry game against the Trojans, though, is the closest thing remaining to a coin toss. ESPN's FPI gives the Irish a 56.5% chance to win.