Originally written on Fox Sports  |  Last updated 11/13/14
Dale Earnhardt Jr. says that he knew something wasn't quite right, so he wanted to be checked out before he returned to the race car. In meeting with neurosurgeon Dr. Jerry Petty this week, it was determined that the driver had a concussion and that it would keep him from racing right away. Thursday morning at Charlotte Motor Speedway, Earnhardt Jr. outlined what led him to step out of his car for the NASCAR Sprint Cup races at Charlotte Motor Speedway and Kansas Speedway. He said that the issue didn't start with the multicar wreck at Talladega Superspeedway, but with a crash during a tire test at Kansas Speedway on Aug. 29. And then he and Dr. Petty, who has worked with NASCAR drivers since 1968 when he joined a neurosurgery practice in Charlotte and who has also worked with the Carolina Panthers, explained why these incidents will keep the sport's most popular driver on the sidelines. "We had a test at Kansas about five weeks ago, and we blew a right front tire going into Turn ...
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