This was his first race since he suffered a back injury last month at Talladega. Nick Sanchez placed a career-best third. Allgaier, the reigning series champion, finished fourth for his ninth top-five result of the season.

Saturday’s NASCAR race at Charlotte needed an overtime finish, like more than half of the Xfinity Series races this year, and the local Cup Series star prevailed.

Fresh off of signing a new four-year contract with Hendrick Motorsports, Cup star William Byron celebrated by securing a NASCAR Xfinity win at Charlotte Motor Speedway on Saturday. He snatched the lead from Justin Allgaier on an overtime restart, driving away with fresher tires as the field took the white flag.