Photos: NASCAR at Las Vegas Motor Speedway, Saturday Sept. 15, 2018

LAS VEGAS, NV - SEPTEMBER 15: Justin Allgaier, driver of the #7 BRANDT Professional Agriculture Chevrolet, leads a pack of cars during the NASCAR Xfinity Series DC Solar 300 at Las Vegas Motor Speedway on September 15, 2018 in Las Vegas, Nevada. (Photo by Sam Wasson/Getty Images)