The ' defense is far better than expected, but they might have lost a key player for the foreseeable future.Embattled cornerback exited with a knee injury and didn't return. Following the game, Jerry Jones told ESPN Dallas that the initial diagnosis Joe Maddon Jersey for the nickelback is a , but Claiborne will undergo more tests to confirm.Dallas coach was le s revealing, only saying that the injury looks serious, but the team will know more Monday.Claiborne's had a rough week. The 2012 first-round pick was benched following 's early reinstatement from suspension. After he received word of the demotion Tuesday, Claiborne , only to reconsider and .Jones called Claiborne a , and it's hard to argue. He's been picked on all year, most notably by and the . Now, Claiborne might have to wait until the 2015 season to prove his critics wrong. In the meantime, fifth-year cornerback replaces Claiborne in the slot.*The latest recaps every game from Week 4 and picks the . * Dillon Maples Jersey