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

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