Raiders tight end Darren Waller, front, is tackled by the Detroit Lions’ Darius Slay, right, and Will Harris, mostly hidden, in Oakland, Calif., on Nov. 3. (AP photo)

DETROIT — The Dallas Cowboys’ offense is having a great year — statistically at least.

Dallas is leading the league in total yards for a fourth straight week and has a chance to close the season as the NFL’s top-ranked offense for the first time in 42 years.

“It’s all kind of clicking for them,” Detroit Lions cornerback Darius Slay said.

Despite the success of Dak Prescott and Co. — they are averaging 437-plus yards a game and are the league’s best offense on third down — the Cowboys are not rolling into the Motor City with much momentum.

Dallas (5-4) is coming off a loss to Minnesota at home and has dropped four of six games.

The Cowboys are tied with Philadelphia atop the NFC East, but they probably can’t afford to lose to the slumping Detroit Lions (3-5-1) because their schedule down the stretch is challenging with games against New England and the Eagles on the road.

“This is a confident group that knows we’re going to peak at the right time,” Prescott said. “We’ve got all the faith and trust that we’re going to get there and handle the things that we need to handle.”

The Lions, meanwhile, have lost five of six after a solid start and don’t want the season to slip away.

“Nobody wants to say the last few weeks haven’t gone the way we wanted and just lay an egg,” Detroit offensive tackle Taylor Decker said.

Detroit will be without quarterback Matthew Stafford for a second straight week because of hip and back injuries, giving Jeff Driskel another opportunity to show the NFL what he can do under center.

The fourth-year pro was 27 of 46 for 269 yards passing and 37 yards rushing — all career highs — with a touchdown and an interception in his sixth career start in last week’s loss at Chicago.

Detroit got off to a 2-0-1 start and had chances to win the next two games in part because its defense forced 11 turnovers in five games. The Lions’ defense has not recovered a fumble or made an interception in two straight games and has forced only one turnover over a four-game stretch.