Denny Hamlin will be back behind the wheel of his No. 11 car this weekend at Martinsville Speedway, after NASCAR received official confirmation from his doctors that he has been medically cleared to resume regular racing activities. Joe Gibbs Racing made the announcement Wednesday afternoon, three days after Hamlin missed the NASCAR Sprint Cup Series event at*Auto Club Speedway due to what the team originally termed a vision problem stemming from a sinus infection. According to JGR, it was actually a piece of metal that doctors removed from Hamlin's eye that proved to be the source of his vision issues. While in Southern California, Hamlin was sent to a local hospital for tests, and upon returning home he met with doctors both Monday and Wednesday. More...