Hamlins back hasnt fully recovered:

#11-Denny Hamlins chronic back pain continues to plague the Joe Gibbs Racing driver. After Hamlin won the pole Friday, it was as if the high banks of Bristol Motor Speedway exacerbated the problem. ‘My daily life is miserable’ Hamlin said. ‘This is nothing.” Surgery to repair his spine is still ‘on the table” at the end of the season. Hamlin contends that ‘once Im strapped in Im fine” but also acknowledges that certain tracks such as Watkins Glen two weeks ago ‘definitely took its toll.” He describes the sensation as ‘a nagging pain that just wont go away” but one has to wonder how long Hamlin can play hurt. ‘I have to weigh the options’ Hamlin said. ‘What options do I have? There are 10 different things you can do to help with either pain or the structure of your back I just have to figure out which one is the right one for me.”( FoxSports )