Dallas faces a stiff Week 1 test on the defensive line against Philadelphia. Interior anchors Osa Odighizuwa, Solomon Thomas, Mazi Smith and Kenny Clark must hold the line and shed blocks, while edge contributors Marshawn Kneeland, Dante Fowler Jr., and Donavan Ezeiruaku pressure Hurts’ downhill runs. Philadelphia’s zone schemes and Barkley-driven short-yardage plays loom large, with Landon Dickerson health lingering. Perrion Winfrey’s status adds depth questions. A disciplined, gap-smart run defense could tilt the game in Dallas’ favor and boost fantasy upside for the Cowboys’ line.