Playoff berths at stake in regular-season finale at Darlington

(Photo credit: Mike Dinovo-USA TODAY Sports)
And then there was one.

Race, that is.

The NASCAR Cup Series' 26-race regular season wraps up at Darlington Raceway with Sunday night's Cook Out Southern 500, the crowning jewel event's first appearance on the cutoff line before the 10-race title chase begins next Sunday at Atlanta Motor Speedway.

Thirteen of the 14 winners have qualified for the postseason run that ends at