updated 6:33 p.m. ET Oct. 14, 2008

Less than a week after surviving its lowest-scoring game of the season, BYU will put its unblemished record on the line against one of the nation’s best defenses.

The ninth-ranked Cougars look to extend the longest win streak in the country and improve to 7-0 for the first time since 2001 when they visit stingy TCU on Thursday night.

After recording two shutouts and outscoring opponents 137-14 over its previous three games, BYU (6-0, 2-0 Mountain West) received an unexpected challenge Saturday. The Cougars were held to 382 total yards - more than 70 less than their season average — and a season-low point total, but defeated New Mexico 21-3.

“It’s a great win for our football team in the way that it came hard-fought, inch-by-inch, foot-by-foot,” coach Bronco Mendenhall told the team’s official Web site. “I was proud of our football team. It was the most physical and hard-fought game that we have played this season.”

BYU’s victory extended the longest win streak in the nation to 16, dating to a loss at Tulsa on Sept. 15, 2007. It also gave the Cougars their first 6-0 start since opening 2001 with 12 wins.

Remaining unbeaten could be a challenge against the Horned Frogs (6-1, 3-0), who received the 27th-most votes in this week’s AP poll thanks in part to their dominant defense.

TCU, which suffered its only loss Sept. 27 on the road to then-No. 2 Oklahoma, has held five of its seven opponents to seven points or fewer. Only the Sooners scored more than 14 points against the Horned Frogs, who rank ninth in the nation in scoring defense with 11.4 points allowed per game.

TCU is No. 1 in the nation in total defense at 207.4 yards per game and tops in the Football Bowl Subdivision in rushing defense at 20.7 ypg.

The Horned Frogs’ defense looked a little shaky in its opening series Saturday, but recovered quickly after giving up a touchdown on that drive as TCU beat Colorado State 13-7.

“I like the way they stood up,” coach Gary Patterson said. “A couple of times (Colorado State) got inside the 35-yard line and (we) didn’t give up any points. We’ve played that way all year, and I’m just glad that it turned out this way today.”

TCU held the Rams to minus-49 yards rushing in the second half and 11 yards on 28 total carries.

“That was the real defense the rest of the way,” linebacker Robert Henson said. “We kept our composure. Luckily, we have a lot of veterans on the team. They kept everybody humble and made sure everyone did their job.”

TCU will have its work cut out for it against BYU’s Max Hall, who ranks among FBS leaders with 1,852 passing yards and 20 touchdowns. Hall, 17-2 as a starter, completed 22 of 34 passes for 265 yards and three touchdowns against New Mexico, and has thrown at least two TDs in each of his last eight games.

Austin Collie has been on the receiving end of many of those scoring plays. The junior receiver caught nine passes for a career-high 162 yards and a TD last weekend, and has eight touchdowns in his last five games.

TCU hopes to counter BYU’s high-octane offense with starting quarterback Andy Dalton back on the field. Dalton hasn’t played since suffering a right knee injury against Oklahoma, but is practicing again and could return this week.

Dalton was 18-for-30 for 165 yards, a touchdown and an interception against BYU on Nov. 8, when Hall went 26-for-44 for 305 yards, a touchdown and an interception in the Cougars’ 27-22 home victory.

BYU has taken five of the teams’ seven all-time meetings, including three of four at TCU’s Amon G. Carter Stadium. The Cougars won their last trip to Fort Worth 31-17 on Sept. 28, 2006, one of the Frogs’ four losses in their last 32 home games.

Also on NBCSports.com PFT: Packers president admits he’s ‘disappointed’ CFT: By the numbers spotlights McCoy  |    Images MLB blog: A look at the top 111 free agents College hoops: North Carolina will be scary good   Video: Red card? Some rough play in women's soccer Twitter: Follow us @nbc_sports

MORE FROM COLLEGE FOOTBALL

College football Section Front

Get ready for mass exodus Trash Talk: SEC not all it’s cracked up to be Predictions 101: Ohio State to roll, N.D. to win squeaker Opinion: 10 bowl matchups that would be a treat Bowl Projections: Big Ten blows BCS spot CFT: ‘By the numbers’ — McCoy goes for record   Vote: Which is the best conference? Iowa-Ohio St. in-depth video preview, analysis Heisman Hopefuls: Ingram leaps to top Notre Dame Central: Navy sinks Irish's BCS hopes   College football Section Front   Add College football headlines to your news reader: