The Dallas Cowboys defense has passed every test this season. The most points they've allowed this season was 23, and it happened twice.
The Pittsburgh Steelers might be the most dangerous offense in the NFL when Ben Roethlisberger is healthy.
The quarterback missed two games after knee surgery and returned on Sunday against the Baltimore Ravens. He looked rusty and struggled for most of the game.
The Cowboys assume that he kicked off the rust during the Ravens and will be 100 percent for Sunday's game.
The stats don't say the Steelers have an elite offense, but the starting group has played very little together due to injuries and suspensions. On Sunday, they'll have all the A-listers including arguably the best wide receiver Antonio Brown and an elite running back in Le'Veon Bell.
Roethlisberger in particular makes life miserable for corner back because of his ability to extend plays. For a defensive lineman, "Big Ben" is a load to bring down as well.
"That's a great challenge for us. That's a guy who doesn't go down easily," said Brandon Carr. "We have no timers this week, we're going to cover until the referee blows the whistle."
"He's like a Cam Newton-type, not running wise but just stout in the pocket. When we get in there we have to run, run and hit. Beat your man and run, run and hit," said Tyrone Crawford.
Carr will likely cover Brown, the Steelers record-setting wide receiver.
"He's talented. One of the best out there. Their chemistry, between Big Ben and AB, they make some plays. Double coverage, triple coverage they seem to find a way to get the ball in," said Carr.
The Dallas defense is averaging 17.5 points per game, which is good enough for 4th in the NFL. If the Cowboys can hold the Steelers to under 20, they'll have a great chance of winning the game. That will be tough, as the Pittsburgh offense is considerably better when playing at home at Heinz Field.