Reddick manages fuel, wins regular-season finale at Las Vegas

Tyler Reddick won Saturday’s Rhino Pro Truck Outfitters 300 at Las Vegas Motor Speedway, as the NASCAR Xfinity Series set its 12-driver playoff field.

Tyler Reddick was able to save enough fuel to not only finish but win Saturday’s NASCAR Xfinity Series race at Las Vegas Motor Speedway. It was a gamble toward the end, as the No. 2 Richard Childress Racing team instructed Reddick when to be conservative and aggressive on the 1.5-mile Nevada track. He was able to hold off second-place Christopher Bell by just 0.738 seconds.

"That was nerve-wracking to say the least," Reddick told NBCSN. "Those last three laps, I was losing fuel pressure."

Brandon Jones ended up finishing third, while Cole Custer and Justin Allgaier rounded out the top five in order.

RELATED: Unofficial Las Vegas results | Reddick wins regular-season title

Bell was actually the one to dominate Stages 1 and 2, winning each by nearly five seconds for his 14th and 15th stage wins. Reddick was third in the first stage and fifth in the second stage.

It was during Stage 2, though, that Reddick secured the regular-season championship, crediting him 15 additional playoff points on top of the five he scored for the overall victory.

This was the regular-season finale, meaning the 12-driver playoff field has unofficially been set. Nine were good-to-go before the green flag waved. Reddick, Bell, Custer, Austin Cindric, Chase Briscoe and Michael Annett were all locked in from previous wins, while Allgaier, Noah Gragson and Justin Haley were clinched on points.

Brandon Jones, Ryan Sieg and John Hunter Nemecheck then all unofficially earned a postseason berth at Las Vegas.

Up next, the Xfinity Series will kick off its postseason Friday at Richmond Raceway with the GoBowling 250.

This story will be updated.