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The 6-1 Dallas Cowboys are rolling, but Sunday’s win over the Philadelphia Eagles may have come at a cost.

Both starting cornerback Morris Claiborne and safety Barry Church suffered potentially serious injuries and will undergo further evaluation Monday, according to Ian Rapoport of NFL Network.

Church reportedly suffered a broken arm while Claiborne is dealing with a possible groin tear. The injuries could be season ending, depending on the severity.

Claiborne has had the best season of his career – tallying 26 tackles, an interception, and fumble recovery – finally showing the potential that made him the Cowboys’ first-round selection in 2012.