While there are plenty of exciting dark horses to watch in the preseason, these Eagles players are struggling early in training camp.

Eagles training camp at the NovaCare Complex had the look and feel of real football, as players locked in with just over a week to go until their preseason opener. And while the breeze may have brought relief from the heat,

If you're looking for real potential obstacles, here are a few. Don't worry about the defense's acclimation. Worry about its depth, especially at edge rusher, and cross your fingers that a committee system is used in the backfield. This team can't overwork Saquon Barkley as they did last season.