Unranked Texas A&M's 33-19 upset of then-No. 8 Oklahoma last season left two lasting images.

For the first time in a long time, players left the field to chants of "Wrecking Crew," the moniker ultimately reserved for the best Texas A&M defenses.

The other was the dominant play on the line of scrimmage that birthed those chants.

Three times, Von Miller's crew stuffed Oklahoma at the goal line, the biggest coming in the final minutes to seal the win, denying DeMarco Murray the end zone on three runs inside the 5-yard line.

Once again, Texas A&M is unranked and facing Oklahoma with three losses. This time, it travels to Norman, where it was beaten 65-10 in its last trip back in 2009.

The Sooners and Aggies are the two most physical offenses in the Big 12, and if A&M is going to spring another upset, it will have to win the battle of the line of scrimmage. The Big 12, with its elite skill-position talent and deep stock of quarterbacks, doesn't always have games decided up front. This one will be.

"Our offensive line is coming around," said Texas A&M coach Mike Sherman, who played true freshmen last year at both offensive tackle spots. "Until this last ballgame, defensively, we’ve been pretty good against the run."

Consider: Oklahoma leads the nation with 34 sacks. The Sooners have allowed three sacks, tied with Boise State for the fewest nationally.

Texas A&M, meanwhile, has given up just seven sacks and is third nationally with 30 sacks.

"A lot of us have definitely stepped up," said Texas A&M defensive lineman Spencer Nealy. "We definitely always play with a lot of effort, and at times, like any other position, we’ll have mistakes, but as a whole, we played pretty good."

The Aggies, though, have ascended to second in the Big 12 at 224 yards rushing per game while Oklahoma has sunk to eighth, though the Sooners possess the league's top passing attack.

Oklahoma will be without leading rusher Dominique Whaley, too, who suffered a broken ankle in Saturday's win over Kansas State.

Texas A&M fields the league's best 1-2 punch at running back, and last year's growth took place without one of them even on the field.

"The maturation of [the offensive line] really helped us. We struggled early in the season. We gave up a lot of sacks in the first half of the season. We didn’t run the ball very well," Sherman said. "We weren’t protecting well, we weren't running the ball well. They started to come into their own. A couple of our young tackles were talented but they didn’t have the experience. I thought they grew up in the second half of the season and we emphasized the run game more and took some pressure off the passing game and tried to stay out of long-yardage situations. ... They had a big part in the second-half run last season."

It's only continued into 2011. Christine Michael's broken leg that forced him out of the second half of the season has healed, and he's on course for a career season with 811 yards, third-most in the Big 12. Cyrus Gray has 704 yards of his own to rank ninth in the league.

Those two are fully capable of carrying the Aggies to the upset.

Despite the high sack numbers for A&M, it's given up more passing yards per game than any team in the country. How?

"It’s not ability at all. We’ve got some of the best players in the Big 12," Nealy said, pointing to fundamentals.

The best way to slow Oklahoma's passing attack is to keep it off the field. That means running the ball well and pressuring Landry Jones.

Texas A&M's offensive and defensive lines can do that. They proved it last year.

Now, it's time to do it again.