THREE THINGS THAT NEED TO GO RIGHT ...
Finish the game. Three of the Ravens' five losses this season have been decided on a late drive in the fourth quarter or overtime. Dallas quarterback Tony Romo has a 119.8 passer rating in the fourth quarter, throwing seven touchdown passes and one interception.
Block DeMarcus Ware. The weak-side linebacker is the most dangerous pass rusher on the NFL's defense with the most sacks. Ware leads the NFL in sacks with 19, including three in Sunday night's victory over the Giants.
Defense delivers a score. The Ravens have run back an interception or fumble for a touchdown in six of their nine wins this season. Since 2003, they lead the NFL in defensive touchdowns (27).
... AND THREE THINGS THAT COULD GO WRONG
Terrell Owens has a big game. This marks his first contest against the Ravens since Owens scored the game-winning touchdown against them in 2004 for the Eagles and mocked Ray Lewis' pre-game dance. In seven games at Texas Stadium this season, he has averaged 19 yards per catch and scored six touchdowns.
Come up empty in the red zone. The Ravens have not scored a touchdown in their past four trips inside the opponent's 20-yard line. The Cowboys have the NFL's eighth-ranked red zone defense.
Can't run the ball. The Cowboys have not allowed more than 80 rushing yards in the past four games, and they have allowed fewer than 100 yards in five of the past six games.