LOUDON, N.H. (AP) William Byron dominated Saturday at New Hampshire Motor Speedway and won the inaugural Chase race in NASCAR's Trucks Series.
The 18-year-old Byron won for the sixth time this season and advanced to the second round of the Chase.
Christopher Bell was second, followed by Matt Crafton, non-Chase driver Tyler Reddick and Timothy Peters.
NASCAR expanded its Chase format this season to include the feeder Xfinity and Truck Series, its champions now crowned in a four-driver shootout at the season finale. The format mostly mirrors the playoff setup used to determine the Sprint Cup champion the last two years.
Trucks will use a seven-race Chase to decide a champ. In Trucks, the format is eight drivers cut down to six and then a final four at Homestead.