DARLINGTON, SC - SEPTEMBER 04: Kevin Harvick, driver of the #4 Busch Chevrolet, and Kyle Larson, driver of the #42 Target Chevrolet, race during 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: Kevin Harvick, driver of the #4 Busch Chevrolet, races during the NASCAR Sprint Cup Series Bojangles' Southern 500 at Darlington Raceway on September 4, 2016 in Darlington, South Carolina. (Photo by Jerry Markland/Getty Images)

DARLINGTON, SC - SEPTEMBER 04: Kyle Busch, driver of the #18 Interstate Batteries Toyota, pits during the NASCAR Sprint Cup Series Bojangles' Southern 500 at Darlington Raceway on September 4, 2016 in Darlington, South Carolina. (Photo by Jerry Markland/Getty Images)

DARLINGTON, SC - SEPTEMBER 04: Denny Hamlin, driver of the #11 Sport Clips Toyota, races Chase Elliott, driver of the #24 NAPA Auto Parts Chevrolet, during 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: Ryan Newman, driver of the #31 Caterpillar Chevrolet, racees Tony Stewart, driver of the #14 Coca-Cola Chevrolet, during 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: Kyle Larson, driver of the #42 Target Chevrolet, races during 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: Kyle Busch, driver of the #18 Interstate Batteries Toyota, pits during the NASCAR Sprint Cup Series Bojangles' Southern 500 at Darlington Raceway on September 4, 2016 in Darlington, South Carolina. (Photo by Jerry Markland/Getty Images)

DARLINGTON, SC - SEPTEMBER 04: Cars race during 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)