Mathews (groin) didn't practice Thursday, Jeff McLane of the Philadelphia Inquirer reports.
Coming out of the Eagles' Week 8 bye, Mathews was a week and a half removed from the groin injury suffered on Oct. 25 against the Panthers. He proceeded to practice both Tuesday and Wednesday, albeit on a limited basis, making Thursday's absence a curious development. Ultimately, head coach Chip Kelly will have a better handle on Mathews' availability Sunday at Dallas following the final practice of the week.