The University of Wisconsin dropped two spots in the Associated Press poll after its 45-17 win at Indiana on Saturday.
Alabama maintained the top spot in the poll, followed by Georgia, Notre Dame, Clemson and Oklahoma.
Notre Dame, Clemson and Oklahoma all ranked behind UW last week. Notre Dame defeated Wake Forest, 48-37, Clemson beat NC State, 38-31, and Oklahoma won at Oklahoma State, 62-52.
The Badgers (9-0, 6-0), though, are now the highest-ranked team in the Big Ten, ahead of No. 11 Ohio State, No. 13 Michigan State, No. 16 Penn State, No. 21 Michigan and No. 25 Iowa.
UW also moved up one spot to No. 3 in the USA Today Coaches poll, behind just Alabama and Georgia.
The latest College Football Playoff rankings are set to be released Tuesday night. The Badgers were ranked ninth by the CFP selection committee last week.