NEW ORLEANS — The Rematch of the Century, it wasn’t.

Alabama romped to another BCS championship against top-ranked LSU with a smothering defensive performance, a numbing barrage of field goals and even a long-overdue trip to the end zone.

Good enough for No. 1, if not a lot of style points.

No. 2 Alabama posted the first shutout in the 14-year history of the BCS, relying on Jeremy Shelley’s right leg for most of the points — he made a bowl record-tying five field goals — and letting its defense do the rest. The Crimson Tide romped to a 21-0 victory over the Tigers for its second BCS title in three years.

While only crimson-clad fans will remember this one as a thing of beauty, Alabama (12-1) erased any doubts that it deserved to be in the title game over another one-loss team like Oklahoma State or Stanford.

Then again, one of those teams might have actually scored a touchdown before Alabama finally did, with 4:36 left in the game, long after fans may have flipped to something more entertaining than a one-sided kicking contest. Amazingly, these Southeastern Conference powerhouses played twice in a span of about two months, and never came that close to one of those things that’s worth six points — you know, touchdowns — until Trent Richardson broke off a 34-yard run with 4:36 remaining.

It only took 115 minutes, 34 seconds, plus an overtime period in their first meeting.

LSU (13-1) had beaten eight ranked teams — including Alabama in early November — to establish itself as the clear No. 1 going into the bowls, but the Tigers crossed midfield only once in the sequel to the Game of the Century in Tuscaloosa. Instead of putting up a “Godfather II,” this one was more akin to “Speed 2.”

The Tigers were outgained 384-92 in total yards, managed a puny five first downs and didn’t cross the 50 until there were just 8 minutes left. From there, they went back, back, back — the last gasp ending appropriately with beleaguered quarterback Jordan Jefferson getting the ball knocked from his hand before he could even get off a fourth-and-forever pass.

The BCS title belongs to Nick Saban, who is carving out quite a legacy of his own at the school that still worships Bear Bryant as if he just retired yesterday. The Associated Press likely will follow suit by bestowing the title on the Tide when its poll comes out early Tuesday, given the dominance of Alabama’s performance.

Saban has won a pair of BCS titles at Alabama, plus another at LSU in 2003. He’s the first coach to win three BCS titles, denying LSU’s Les Miles his second championship. The Tigers will have to settle for the SEC title, but that’s not likely to ease the sting of this ugly performance.

Back on Nov. 5 at Bryant-Denny Stadium, Alabama held the top spot in the first matchup between the 1-2 teams. The Tigers pulled off a 9-6 victory in overtime, kicking three field goals while the Crimson Tide missed four of its six attempts.

OK, so maybe that wasn’t a classic. But it was downright thrilling compared to the rematch, the first time in the BCS that teams played for the title after meeting during the regular season.

Credit the Alabama defense for that.

Led by dominating linebackers Courtney Hightower and Dont’a Hightower, LSU simply couldn’t do anything — running or passing. Kenny Hilliard led the Tigers with 16 yards rushing, while Jefferson was 11 of 17 passing for 53 yards, usually hurrying away passes before he was sent tumbling to the Superdome turf. He was sacked four times and threw a mystifying interception when he attempted to flip away a desperation pass, only to have it picked off because his intended receiver had already turned upfield looking to block.

A.J. McCarron was the offensive MVP, completing 23 of 34 for 234 yards. Richardson added 96 yards on 20 carries. But an even bigger cheer went up when the defensive award was presented to Upshaw, who had seven tackles, including a sack, and spent a good part of his night in the LSU backfield.