The combination of impressive victories by Alabama and Ohio State and a stunning loss by Virginia Tech led to Boise State losing all but one of its first-place votes in the AP Top 25.
Georgia and Georgia Tech fell out of the poll after losing Saturday.
The Broncos were still No. 3, behind the top-ranked Tide and No. 2 Buckeyes in the poll, but the gap has widened.
Alabama received 52 first-place votes and 1,466 points. Ohio State had five first-place votes and 1,410 points and Boise State received one and 1,306.
TCU remained fourth and Oregon jumped two spots to No. 5 after winning 48-13 at Tennessee.
Michigan moved into the rankings for the first time this season at No. 20 after its dramatic 38-24 victory at Notre Dame.
GEORGIA: Coach Mark Richt says he hopes the NCAA will hear the school's appeal to shorten A.J. Green 's four-game suspension on Tuesday.
The NCAA ruled last week Green must sit out four games to regain his eligibility after selling a game jersey for $1,000. Green, the team's top receiver, sold his jersey from last season's Independence Bowl.
MISSOURI: Former captain Derrick Washington was been arrested again.
Washington was arrested early Sunday on suspicion of third-degree domestic assault, a misdemeanor.
OKLAHOMA: Running back Brennan Clay was released from the hospital after being injured in the Sooners' win against Florida State.
Coach Bob Stoops says "everything has checked out well" for Clay, who was back at home on campus Sunday.
AUBURN: Coach Gene Chizik says tackle Lee Ziemba 's knee injury doesn't appear to be serious.
Ziemba hurt his right knee during the Mississippi State game. He tweeted that an MRI showed no tear.