No. 1 Clemson (11-0) and No. 2 Alabama (10-1) stayed in place, followed by No. 3 Oklahoma (10-1) and No. 4 Iowa (11-0).
Here is how it happened:
* Ohio State (10-1) dropped to No. 8 from No. 3 after a 17-14 home loss to Michigan State.
* Notre Dame (10-1) dropped two spots, to No. 6, after struggling to beat Boston College 19-16 at Fenway Park.
* Iowa (11-0) — one of just two unbeatens, along with Clemson — moved one spot, to No. 4, after beating Purdue 40-20.
* Oklahoma State (10-1) dropped from No.