Unbeaten Nebraska gained another spot in the Associated Press college football poll this week.

The Huskers moved up to seventh after its win over Purdue Saturday.

Ohio State dropped four spots to No. 6 in The Associated Press college football poll after its first loss of the season, and Penn State moved into the rankings for the first time since 2011 after upsetting the Buckeyes.

Alabama is No. 1 again, receiving all but one of the 61 first-place votes from the media panel on Sunday. Michigan moved up to No. 2, Clemson is No. 3 and Washington No. 4.

Louisville moved up to No. 5 ahead of the Buckeyes, who blew a 14-point fourth-quarter lead and lost 24-21 against Penn State on Saturday night. The Nittany Lions entered the rankings at No. 24.

The SEC has six teams in the rankings, followed by the Big Ten and ACC, with five teams apiece.