NASCAR team owner Joe Gibbs, addresses the media about the condition of his son J.D. Gibbs in the media center prior to the start of the NASCAR Sprint Cup race at the Martinsville Speedway in Martinsville, Va., Sunday, March 29, 2015. Joe Gibbs Racing President J.D. Gibbs is undergoing treatment for "symptoms impacting areas of brain function," which likely stem from a head injury suffered earlier in life.
NASCAR team owner Joe Gibbs, addresses the media about the condition of his son J.D. Gibbs in the media center prior to the start of the NASCAR Sprint Cup race at the Martinsville Speedway in Martinsville, Va., Sunday, March 29, 2015. Joe Gibbs Racing President J.D. Gibbs is undergoing treatment for "symptoms impacting areas of brain function," which likely stem from a head injury suffered earlier in life. Steve Helber AP
NASCAR team owner Joe Gibbs, addresses the media about the condition of his son J.D. Gibbs in the media center prior to the start of the NASCAR Sprint Cup race at the Martinsville Speedway in Martinsville, Va., Sunday, March 29, 2015. Joe Gibbs Racing President J.D. Gibbs is undergoing treatment for "symptoms impacting areas of brain function," which likely stem from a head injury suffered earlier in life. Steve Helber AP