NASCAR Southern 500 Results: Regan Smith Edges Carl Edwards For Checkered Flag

Regan Smith stunned the NASCAR world late Saturday night, pulling off a wild Southern 500 upset as tempers flared at Darlington Raceway.

Smith didn't take any tires when most teams did, and was able to maintain his lead through the final two restarts. On the green-white-checkered, Smith shot out to the lead by the backstretch, with Carl Edwards in tow.

Edwards was stalking as the white flag waved. Smith bobbled down the backstretch on the final lap, tapping the wall but recovering to keep the lead. And as they came to the wire, Smith was able to hang on, taking the win at Darlington in the Southern 500.

Following the race, Kyle Busch and Kevin Harvick got into it at the entrance to pit road as both circled each other on the track before parking on pit road. Harvick got out of his car and went after Busch, punching through his window net as Busch drove off. At the same time, Harvick's car took off on its own – with a bump from Busch – making a turn and slamming into the wall on pit road. To say it was surreal would be an understatement.

Stay tuned for more post-Southern 500 coverage.

Full results from the Southern 500 at Darlington Raceway are as follows: