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Austin Dillon won the Cook Out 400 at Richmond Raceway, securing a playoff spot.

Dillon's win bumped Chris Buescher out of a playoff position, leaving Tyler Reddick and Alex Bowman holding the final two spots.

The NASCAR regular season concludes next weekend with the Coke Zero Sugar 400 at Daytona International Speedway.

Austin Dillon breezed through his last lap.

He had been in front for the previous 47 trips around Richmond Raceway on Saturday , Aug. 16. What was one more?

He held off Alex Bowman by 2.5 seconds to capture the Cook Out 400 checkered flag and slide himself into the NASCAR Cup Series playoffs .

Dillon thought he had done so last year. He won at Richmond, but it happened with two bull-in-a-china-shop moves on Joey Logano and Denny Hamlin

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