Morris Claiborne's season has ended because he tore a patellar tendon in his left knee.

Claiborne suffered the noncontact injury on a third-and-3 play with 5:52 left in the first quarter. He did not return to the game, and owner and general manager Jerry Jones said initial fears were a torn anterior cruciate ligament.

Claiborne walked out of the Dallas Cowboys' practice facility last week when informed that he'd lost his starting job to Orlando Scandrick.