Following a weekend in which three of the top four teams lost, the expected shake-up in the College Football Playoff rankings was made official Tuesday night. After No. 1 Alabama (10-0), the sole undefeated major-conference team, Nos. 2 through 4, representing the teams that would complete the playoff bracket if the season ended Tuesday, were Ohio State (9-1), Michigan (9-1) and Clemson (9-1).

The Buckeyes jumped from fifth and over Michigan, which lost at Iowa on Saturday and stood pat at No. 3. After a home upset at the hands of Pitt, Clemson (9-1) dropped from second to fourth. Washington (9-1), which lost at home to now No. 13 Southern California (7-3), fell from fourth to sixth. Louisville claimed the No. 5 spot.

Rounding out the top 10 were Wisconsin (8-2) at No. 7, Penn State (8-2) at No. 8, Oklahoma (8-2) at No. 9 and Colorado (8-2) at No. 10.

But things are bound to get more complicated — with two weeks left in the regular season and then four conference championship games — before the final bracket is released on Dec. 4.