William Byron won the Ticket Galaxy 200 at Phoenix Raceway for his fourth Xfinity win of the year.
Byron led the final 13 laps after taking two tires on the last round of pit stops.
He beat Ryan Blaney, Erik Jones, Christopher Bell and Daniel Hemric.
Byron, Hemric, Elliott Sadler and Justin Allgaier will take part in the championship race at Homestead-Miami Speedway next week.