NEW YORK -- LSU put a lock on the top spot, Oklahoma State moved up to No. 2 for the best ranking in school history, and Alabama slipped to No. 4 in the Associated Press Top 25 poll after losing a 1 vs. 2 showdown against the Tigers.
LSU received 59 out of 60 first-place votes Sunday after beating the Crimson Tide 9-6 in overtime in Tuscaloosa, Ala., the night before.
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Oklahoma State moved up one spot after a wild 52-45 victory against Kansas State and Stanford also inched up to No. 3.
Alabama slipped two spots. Boise State remained No. 5 with one first-place vote.
LSU, Oklahoma State, Stanford, Boise State and No. 11 Houston are the remaining unbeaten teams in major college football. The Cougars (9-0) have their best ranking in the AP poll since 1991.
Southern Miss is ranked for the first time since 2004.
Falling out after losses were Arizona State and West Virginia.