NEWTON, Iowa (AP) — Rookie William Byron grabbed the lead with just over 20 laps and won the NASCAR Xfinity race at Iowa Speedway on Saturday night for his first series victory.
A seven-time winner last year in the Truck Series, Byron broke through just a week after an agonizingly close defeat to Monster Energy Cup star Denny Hamlin at Michigan.
The 19-year-old Byron drives the No. 9 Chevrolet for JR Motorsports.
Ryan Sieg was second in the stand-alone race with no Cup regulars in the field.
Tyler Reddick was third, followed by Ross Chastain and Dakoda Armstrong.