Penn State, which had been No. 2 since the preseason, was idle and slipped to No. 3. LSU fell one spot to No. 4 after an easy win over Southeastern Louisiana of the second-tier Football Championship Subdivision.
College football is unpredictable and delightful, which is why we live for what happens on Saturdays. And Week 4 certainly delivered, from a shocking blowout in Bloomington to a nailbiter in Norman and everything in between.
Fernando Mendoza threw five touchdown passes and D'Angelo Ponds scooped up the punt he blocked and returned it 11 yards for a score Saturday night, leading No. 19 Indiana past No. 9 Illinois 63-10.
Jadarian Price scored four touchdowns, including a 100-yard kickoff return, and No. 24 Notre Dame beat Purdue 56-30 on Saturday for its first win of the season.
The Beavers will visit the No. 6 Ducks at Autzen Stadium in the 129th meeting between the two former Pac-12 rivals. The only time the series has been interrupted was during World War II.
Behind head coach Bret Bielema and veteran QB Luke Altmyer, Illinois enters Saturday's matchup against Indiana hoping to display its contender credentials.