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.

The Philadelphia Eagles have announced a roster move this week. They have waived Danny Gray and added the former Sam Houston wide receiver, Ife Adeyi.

Biggest Takeaways from Eagles' First Padded Practice

But that’s what’s on the docket this year, as the Lions and Chargers kick off the NFL preseason, squaring off in the Hall of Fame Game in Canton, Ohio. Dan Campbell said his starters won’t play — no surprise there — and that list includes rookies Tyleik Williams and Tate Ratledge.