The Cowboys Zack Martin has been ruled out to return of the remainder of the Chargers' game after he left a little before the end of the first quarter with a concussion, reports Brandon George of the Dallas Morning News. The All-Pro right guard went to the medical tent to get evaluated for a concussion and was ruled out for the remainder of the game right after halftime. The Cowboys (5–5) were struggling to score as is, losing 3–0 at halftime.