Why the Eagles? Better team getting points especially with Dallas not playing well losing to the Jets and Packers, who scored the first 24 points in that game. 
The Cowboys are dealing with key injuries. Both of Dallas' starting offensive tackles have been out the last couple of weeks. The Cowboys rely on Ezekiel Elliott to produce yardage on the ground, but the Eagles rank second in run defense. Dak Prescott isn't that effective in the air without his top wideout, Amari Cooper, who isn't expected to play. The Cowboys also could be minus their top cornerback, Byron Jones. He's dealing with a hamstring injury.
The Eagles, on the other hand, are getting healthier as several of their cornerbacks could play after being out. 
This has been a road series with the visitor covering 11 of the last 15 times.