GREEN BAY, Wis. -- You can't accuse the Green Bay Packers' 64-year-old defensive coordinator of being averse to trying new things.

On Sunday, after a week of questions about why Clay Matthews' production had slipped this season, Dom Capers unveiled another new defensive package. This one, called "NASCAR" presumably because it employed more speed on the defensive front, may not have led to a breakout for Matthews, but it proved useful in what was perhaps the Packers' best defensive showing of the year in their 38-17 win over Carolina.

Clay Matthews was able to put steady pressure on Panthers quarterback Cam Newton on Sunday. Jeff Hanisch/USA TODAY Sports

And, oh yeah, Matthews managed to get a shared sack with Julius Peppers, although it came out of a different package.

In "NASCAR," Capers went without any traditional defensive linemen in what was a dime (six defensive back) secondary alignment. Instead, he lined up Matthews and Peppers -- his starting outside linebackers -- as defensive tackles on the interior of the line and flanked them with Nick Perry and Mike Neal as outside linebackers.

"It gets all four of our elephant types on the field at the same time," Packers coach Mike McCarthy said. "Yeah, it's been very productive."

Capers used it only in third-down situations. The first five times he employed "NASCAR" on Sunday, the Packers came up with third-down stops on four of them, including Perry's sack of Cam Newton on third-and-5 to end the Panthers' second series. Carolina converted just 4-of-12 third downs.

"We like that a lot because you put me, Pep, Mike Neal and Nick Perry out there; that's a pretty good pass-rushing group," Matthews said. "When we put that in there, we're thinking that's a pass-rushing down, and we turn loose a little bit. You always love that."

The Packers sacked Newton just three times, but Matthews missed on two others. He shared one of the sacks with Peppers, who had another by himself. Still, through seven games this season, Matthews has just 1.5 sacks. After getting shut out in the tackle category a week ago at Miami, Matthews was credited with two stops against the Panthers.

"In all honesty, I don't have to prove it to anyone but myself," said Matthews, the four-time Pro Bowler. "I'm a good player, and I know that I am. And it's just about putting together performances."

The Packers didn't feast on turnovers like they had the previous four games (when they had 11 takeaways), although cornerback Casey Hayward picked off his second pass in as many games. But the defense was borderline dominant early in the game. At first quarter's end, the Panthers had just 5 total net yards.

"You wish every quarter was like that," Packers cornerback Davon House said. "We only got, what, 12 plays of defense, and the offense scored every single time they got the ball. That was probably as close to perfect."