LOUDON, N.H. -- Rick Hendrick does not believe the concussion symptoms suffered by Dale Earnhardt Jr. will be career-ending for the sport's most popular driver.
Earnhardt, who announced Thursday he could not race this weekend at New Hampshire Motor Speedway because of the symptoms, missed two races in 2012 because of concussions.
The 41-year-old Earnhardt believes crashes June 12 at Michigan and July 2 at Daytona possibly caused the symptoms, which he initially thought were from severe allergies or a sinus infection.