New York ? Oklahoma, where the No. 1 ranking rests again.

The Sooners sit atop the AP Top 25 on Sunday after the first upset-filled weekend of the season gave the media poll a powerful shake. Alabama was both a mover and a shaker, as the Crimson Tide rose to No. 2 after a surprising 41-30 pounding of Georgia.

Previously top-ranked Southern California lost at Oregon State to set the tone for a weekend that brought back memories of the topsy-turvy 2007 season.

On Saturday, two more top-five teams fell. Florida was stunned at home by Mississippi, 31-30. Georgia, which started the season No. 1, was down 31 points by halftime to Alabama and never recovered.

Overall, nine ranked teams lost, six to unranked foes.

The last time such a shake-up occurred? One year ago, when in the last week of September three of the top-five teams fell and seven ranked teams lost to unranked opponents.

“I think we talked (Friday) that anyone can beat anyone on any given Saturday, and that’s why you’ve got to come out and you’ve got to play on edge, full tilt every game because if not, someone’s liable to come in and beat you,” Oklahoma QB Sam Bradford said.

Oklahoma is No. 1 for the 96th time in the history of the AP poll, breaking a tie with Notre Dame for the most ever.

Three other Big 12 teams were in the top seven: Missouri (at No. 4), Texas (No. 5) and Texas Tech (No. 7). Kansas moved up two spots to No. 16, and Oklahoma State joined the rankings at No. 21.