Dale Earnhardt Jr. Has Concussion

Dale Earnhardt Jr. knew he had suffered a concussion in an August crash so jolting that other drivers tweeted about it immediately after the impact. Earnhardt was too stubborn to see a doctor about it. He was too worried he would be yanked from his car, derailing his long-suffering Sprint Cup Championship hopes. So he kept it a secret until a 25-car accident on the last lap Sunday at Talladega left him with a lingering headache. NASCAR's most popular driver sought medical...Full Story