The Tigers and Crimson Tide, both 8-0 and each with a week off to prepare for their Nov. 5 meeting in Tuscaloosa, Ala., continued to sit 1-2 in Sunday's standings with BCS averages of .9702 and .9627, respectively.
Losses by the Sooners and Badgers, though, scrambled the standings and created opportunities for others. Oklahoma fell from No. 3 to No. 9 after getting upset at home by Texas Tech, and Wisconsin dropped from No. 6 to No. 15 after falling at Michigan State on a last-second Hail Mary.
Oklahoma State, with an average of .9240, took Oklahoma's spot at No. 3, followed by Boise State (.8302) and Clemson (.8240).
Stanford moved up two spots to No. 6, followed by Oregon, Kansas State, Oklahoma and Arkansas. Oregon, the highest-ranked one-loss team, plays at Stanford on Nov. 12.
With either LSU or Alabama guaranteed to have a loss, the weekend upsets focus attention on the tight battle among unbeatens Oklahoma State, Boise State, Clemson and Stanford to move into the No. 2 slot.
The top two in the final standings Dec. 4 will meet for the BCS title Jan. 9 in New Orleans.