While the 8-6 Cowboys have a two-game lead over the 6-8 Eagles, the teams are much closer in terms of point differential, with Dallas at +53 and Philadelphia at +31, while the Eagles have dominated two solid AFC East teams with star QB Michael Vick in the line-up in the last two weeks.
For the Cowboys, Saturday's game is a chance to make up for their worst performance of the season, an embarrassing 34-7 loss to Philadelphia on national TV on Week 8.
The Eagles rush defense, ranked 17th in the NFL, is much weaker than their pass defense, rated 10th, which features one of the league's best collection of defensive backs in Nnamdi Asomugha, Asante Samuel and Dominique Rodgers-Cromartie.
Dallas will depend on Felix Jones, who has stepped up in the absence of rookie star DeMarco Murray, to anchor a strong ground game. Jones, who missed practice on Tuesday with a hamstring injury, has rushed for 552 yards and 1 TD on 4.7 yards per carry this season.
Philadelphia has one of the most explosive offenses in the NFL, with Vick, RB LeSean McCoy and WR's DeSean Jackson and Jeremy Maclin all threats to break out big plays at any time, which could be a problem against a Cowboys secondary that has been repeatedly burned in recent weeks.
With two strong offenses going toe-to-toe, the odds-makers have set the over/under for the game at 50.5.