TUSCALOOSA, Ala. - The defenses lived up to the billing in the latest Game of the Century. Neither No. 1 LSU nor No. 2 Alabama could reach the end zone Saturday night, not even with extra time.

The Tigers aren't complaining.

They now have the inside track to the BCS title game.

Drew Alleman kicked a 25-yard field goal in overtime to lead LSU to a 9-6 victory over Alabama, which missed four field goals and squandered another scoring chance by throwing a goal-line interception — simply too many mistakes to overcome in this fierce defensive struggle.

"It didn't go by the script," LSU coach Les Miles said. "The key is to keep fighting, to find a way."

Find a way, these Tigers did.

With a lot of help from the Crimson Tide.

"It's a difficult pill to swallow," said receiver Marquis Maze, who was hobbled by a leg injury and was at the center of two key miscues in the fourth quarter. "If everybody executes in the red area, that wasn't even a close game. The defense played outstanding."

Alabama missed four field goals, including Cade Foster's 52-yard attempt after the Tide got the ball first in the extra period. LSU appeared to win the game on Michael Ford's run around left end after taking a pitch, but he stepped out of bounds at the 7.

Two plays gained nothing, so LSU (9-0, 6-0 Southeastern Conference) sent on Alleman to attempt his third field goal of the game on third down. Alabama (8-1, 5-1) tried to freeze him by calling timeout, but he calmly knocked it through to set off a wild celebration by the visiting team.

A small contingent in purple and gold chanted, "LSU! LSU! LSU!" The players ran to the far end of the field to celebrate with their band and the fans who made the trip from Louisiana.

"Before I went to bed last night, I was preparing for it," Alleman said. "It's every kicker's dream, and I got to live it."

The crowd of more than 100,000 at Bryant-Denny Stadium — most of them dressed in crimson — sat in stunned silence as LSU celebrated its victory in only the 23rd regular-season matchup between the top two teams in The Associated Press rankings.

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LSU still must win its last three regular-season games — No. 8 Arkansas is the toughest test — and then would have to get through the SEC championship game. But the Tigers are the clear favorite after winning another huge game away from home, emerging with the victory in a matchup between the two teams generally considered the best in the land.

And what if the BCS formula pits LSU against Alabama again in the national championship game?

"I'd be honored to face that team again," Miles said.

The Crimson Tide isn't giving up.

"They only beat us by three," Maze said. "I hope we get that chance."

If a rematch doesn't work out, Alabama will long be moaning about how this one got away. Foster missed two first-quarter field goals, and Jeremy Shelley had one blocked before Shelley finally made one from 34 yards. Alleman kicked a 19-yarder on the final play of the first half, leaving the teams tied at 3 even though the Crimson Tide clearly had the upper hand.

Interceptions set up both field goals in the second half. Foster made one from 46 yards after Jarrett Lee threw his second pick of the game, then Alleman connected from 30 yards after AJ McCarron's ill-timed throw was picked off by Morris Claiborne.

"Defense wins ball games," Claiborne said. "That's all I've got to say about that. You come out and you prepare hard and play like we did tonight, and you come out on top."

Outside of the kicking woes, Maze was at the center of two decisive plays in the fourth quarter that helped finish off the Crimson Tide. First, with Alabama threatening at the LSU 28, he took a snap in the wildcat formation and tried to surprise LSU with a pass. Tight end Michael Williams broke into the clear near the goal line, but Eric Reid hustled back to snatch it away as both players tumbled to the ground at the 1.

Reid wound up with the ball, the officials ruled it an interception and a replay upheld the call.

LSU failed to pick up a first down, and it looked as though Alabama would get it back in good field position to take another crack at the LSU end zone. But Maze, favoring his leg, couldn't catch the long line-drive punt. He turned away from it around his own 40 and the ball rolled all the way to the Alabama 19.

Afterward, he said his injury had nothing to do with it — the ball struck a wire that allows a television camera to hover above the field.

The Tiger got it out to around midfield on their final possession of regulation, then had to punt it away. Alabama took over with only 52 seconds left and settled for overtime.

"Our season was at stake," Claiborne said. "We knew where we want to be at the end of the season."

Unlike Notre Dame's infamous 10-10 tie with Michigan State in another 1-2 matchup in 1966, when the Irish ran out the clock at the end of the fourth quarter, this one could not end that way.

Though even with extra time it will go down as the second-lowest scoring No. 1 vs. No. 2 game in the 75-year history of the AP poll. The fewest points in a 1-2 game is zero, the famous Army-Notre Dame scoreless tie in 1946.

"When you get blown out, you've got lots of issues and problems," Alabama coach Nick Saban said. "I don't think anybody could watch that game and say Alabama doesn't have a really good team and didn't play a really good game. We just didn't win."

The buildup to the game resembled a Super Bowl, especially with both teams getting a couple of weeks to prepare. More than 100,000 fans squeezed into Bryant-Denny Stadium. Tens of thousands more converged on Tuscaloosa without tickets, content to just tailgate, soak up the atmosphere and watch the game on televisions outside the stadium.