AUBURN, Ala. — Auburn's defense was getting run over again, this time by No. 2 Florida and it's two-headed quarterback attack.

Coach Tommy Tuberville had seen enough and challenged his defenders at halftime.

The Tigers responded, scoring on a blocked punt and a last-play fumble return and making a late interception to beat the Gators, 27-17, last night and leave the Southeastern Conference without an unbeaten team.

"We couldn't slow them down in the first half, and they couldn't move it in the second half," Tuberville said. "Offensively, we didn't score a touchdown. How do you do that and beat a team like that?"

In the end, that merciless SEC claimed another victim as Florida became the fourth team ranked No. 2 in the AP Top 25 to lose this season, joining Texas, Notre Dame and Auburn.

The 11th-ranked Tigers (6-1, 4-1) turned the tables on Chris Leak, Tim Tebow & Co. in the second half, benefiting from Leak's fumble deep in Auburn territory that killed a chance for at least a go-ahead field goal.

Florida coach Urban Meyer challenged the call arguing that it was an incomplete pass but replay officials let the play stand — and it turned the game around. It also cost the Gators (6-1, 4-1) their final timeout, but he didn't grouse about the call after the game. Neither did Leak, though he said he thought his arm was going forward.

"We will go back and watch it on TV, but obviously there wasn't enough evidence to overturn the call on the field," Meyer said. "We have to live with the call and we have to get better."