William Byron finished third in Saturday’s Ford EcoBoost 300 to give JR Motorsports its second Xfinity title.
The team, co-owned by Dale Earnhardt Jr., swept the top-three spots in the final standings with Elliott Sadler placing second and Justin Allgaier in third.
Daniel Hemric placed fourth after finishing last among the Championship 4 drivers in the race.
Race-winner Cole Custer ends the season in fifth.