FORT WORTH, Texas — Just as BYU is re-establishing its longstanding reputation for producing stellar quarterbacks and explosive offenses, TCU has made its mark defensively under coach Gary Patterson.

The Horned Frogs are widely regarded as the best defensive team in the nation, at least statistically. They boast a defense that currently ranks No. 1 in the country in total defense, rushing defense and sacks. They are No. 6 in turnovers gained and No. 9 in scoring defense.

Yet this year's performance is no fluke. Since 1999, TCU has been ranked in the top five nationally in total defense four times.

For a Cougar offense that is ranked No. 8 in passing offense yet sputtered in its last two games, against Utah State and New Mexico, the TCU defense presents a major obstacle when the two Mountain West Conference heavyweights collide Thursday night at Amon G. Carter Stadium.

BYU quarterback Max Hall is eager to face the top-rated defense in the country.

"I love it. It's a challenge," he said. "They're a very good football team. I'm not out to prove anything. I just want to win the game. We're going to do what we have to do to win."

San Diego State entered its game against the Frogs on Oct. 4 ranked No. 10 nationally in passing but gained only 98 yards through the air in a 41-7 loss. The Aztecs had only 85 yards of total offense after rushing for minus-13 yards.

"They play together so well," SDSU coach Chuck Long said of TCU's defense. "I've been in this league three years — that's the best defense I've seen yet. And I've seen some good ones."

The heart of TCU's defense is in its linebacking corps, led by seniors Jason Phillips and Robert Henson, who are three-time All-MWC selections. Phillips has started 45 games in his career.

"He is as good as advertised," Long said of Phillips.

Another linebacker, Daryl Washington, is also emerging as an impact player. Junior defensive end Jerry Hughes has racked up seven sacks, while cornerbacks Rafael Priest and Nick Sanders are three-year starters.

What makes TCU's defense so strong?

"They've played together for a number of years. That's significant," Long said. "They haven't had any injuries, and that helps. They have a solid scheme. One thing you see with them is they play with confidence. That makes all the difference in the world."

The Frogs play a 4-2-5 alignment designed to put pressure on the quarterback. They have enough team speed to load up in the box to stop the run and then defend the pass with what BYU coach Bronco Mendenhall refers to as "recovery speed."