Cowboys wide receiver CeeDee Lamb exited “Thursday Night Football” against the Lions with a concussion during the third quarter after going up for a catch in the end zone and hitting his head on the turf. Lamb went to make the one-handed catch and came down on his head and rolled over in the fencing posture in a scary scene as one of the officials seemed to show quick concern. The four-time Cowboys Pro Bowl wideout came off the field, heading toward the locker room, and Lamb was quickly ruled