With four races left in the Sprint Cup regular season, the push for NASCAR's playoffs revs up at Bristol Motor Speedway with the Bass Pro Shops NRA Night Race on Saturday night. Sprint Cup drivers got a final week off last weekend and now race uninterrupted through the season-ender in Florida on Nov. 20. The immediate concern for most of those in the garage is making the 16-team Chase field - either insiders shoring up a dicey spot on the end of the grid or outsiders making a last-ditch charge to get in. More...