Notre Dame moved into the top four as the College Football Playoff selection committee released the second edition of its rankings this season on Tuesday night.
Clemson remained No. 1, with Alabama moving up two spots to No. 2 and Ohio State staying at No. 3. The Fighting Irish, now No. 4, had been fifth.
Notre Dame and Alabama are 8-1. Clemson and Ohio State are 9-0.
The Crimson Tide took over the spot that had belonged to Louisiana State, which dropped to No. 9 after losing at Alabama, 30-16, on Saturday.