Cowboys C Phil Costa is undergoing tests on his lower back.
Uh oh. It’s a concern for the Cowboys, as neither G/C Bill Nagy (high-ankle sprain) nor C Kevin Kowalski (undisclosed) is expected to be ready for Week 1, but coach Jason Garrett doesn’t believe the injury is serious. The Cowboys have just G David Arkin behind their starting center, whom they originally wanted to push in camp. Even team-approved beat writer Josh Ellis believes the Cowboys should have signed a veteran center “last week.”