#31-Jeff Burton is the lone Sprint Cup driver who has completed every lap (3,297) of competition this season. Burton also has completed 77.5% of the total laps (2,555 of 3,297) running in the top 15 and leads all drivers with the most runs on the lead lap (3,277 of 3,297).(RCR)(5-8-2008) UPDATE: Burton completed all 367 laps at Darlington Saturday night.(5-11-2008)
