Dale Earnhardt Jr., who had two concussions in 2012, confirmed Friday at Martinsville (Va.) Speedway he will donate his brain to concussion research.
Dale Earnhardt Jr., who had two concussions in 2012, confirmed Friday at Martinsville (Va.) Speedway he will donate his brain to concussion research. Steve Helber AP
Dale Earnhardt Jr., who had two concussions in 2012, confirmed Friday at Martinsville (Va.) Speedway he will donate his brain to concussion research. Steve Helber AP