DARLINGTON, SC - SEPTEMBER 04: Brad Keselowski, driver of the #2 Miller Lite Ford, leads a pack of cars during the NASCAR Sprint Cup Series Bojangles' Southern 500 at Darlington Raceway on September 4, 2016 in Darlington, South Carolina. (Photo by Jonathan Ferrey/Getty Images)

DARLINGTON, SC - SEPTEMBER 04: Brad Keselowski, driver of the #2 Miller Lite Ford, leads a pack of cars during the NASCAR Sprint Cup Series Bojangles' Southern 500 at Darlington Raceway on September 4, 2016 in Darlington, South Carolina. (Photo by Jonathan Ferrey/Getty Images)

DARLINGTON, SC - SEPTEMBER 04: Actor and Bojangles' Southern 500 National Anthem Performer, Barry Williams, sings before the NASCAR Sprint Cup Series Bojangles' Southern 500 at Darlington Raceway on September 4, 2016 in Darlington, South Carolina. (Photo by Josh Hedges/Getty Images)

DARLINGTON, SC - SEPTEMBER 04: Paul Menard, driver of the #27 Valvoline/Menards Chevrolet, races Regan Smith, driver of the #7 Nikko RC Road Rippers Chevrolet, during the NASCAR Sprint Cup Series Bojangles' Southern 500 at Darlington Raceway on September 4, 2016 in Darlington, South Carolina. (Photo by Brian Lawdermilk/Getty Images)

DARLINGTON, SC - SEPTEMBER 04: Jamie McMurray, driver of the #1 McDonald's Chevrolet, races Ryan Blaney, driver of the #21 Motorcraft/Quick Lane Tire & Auto Center Ford, during the NASCAR Sprint Cup Series Bojangles' Southern 500 at Darlington Raceway on September 4, 2016 in Darlington, South Carolina. (Photo by Brian Lawdermilk/Getty Images)

DARLINGTON, SC - SEPTEMBER 04: Kevin Harvick, driver of the #4 Busch Chevrolet, leads the field past the green flag during the start of the NASCAR Sprint Cup Series Bojangles' Southern 500 at Darlington Raceway on September 4, 2016 in Darlington, South Carolina. (Photo by Jonathan Ferrey/Getty Images)

DARLINGTON, SC - SEPTEMBER 04: Kevin Harvick, driver of the #4 Busch Chevrolet, leads the field past the green flag during the start of the NASCAR Sprint Cup Series Bojangles' Southern 500 at Darlington Raceway on September 4, 2016 in Darlington, South Carolina. (Photo by Jonathan Ferrey/Getty Images)

DARLINGTON, SC - SEPTEMBER 04: Kevin Harvick, driver of the #4 Busch Chevrolet, leads the field past the green flag during the start of the NASCAR Sprint Cup Series Bojangles' Southern 500 at Darlington Raceway on September 4, 2016 in Darlington, South Carolina. (Photo by Jonathan Ferrey/Getty Images)