The University of Wisconsin moved up one spot to No. 4 in the Associated Press and USA Today Coaches polls after its 24-10 win at Illinois on Saturday.
The Badgers jumped ahead of TCU and Penn State, which lost to Iowa State and Ohio State, respectively, but fell behind the Buckeyes.
Alabama maintained the top spot in both polls, followed by Georgia and Ohio State.
The first College Football Playoff rankings will be released Tuesday at 6 p.m. on ESPN.