Carpenter played all 54 offensive snaps during the 28-24 loss to New England, and it's unclear when he suffered the concussion. He's scheduled to reach unrestricted free agency this offseason.
Lynch totaled 82 yards on 18 touches against Arizona in Week 12 while dealing with a back issue, but he reportedly had a good week of practice before being listed as probable for Thursday's game.
Unger, Burley and Pierre-Louis had been ruled out for Sunday's game, while Dobbs was deemed doubtful. Carpenter got the red light after being questionable, leaving the Seahawks down two interior linemen against an imposing Arizona defense.
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