This is Custer’s first NASCAR Xfinity Series championship. He finished runner-up in the standings in his most recent fulltime seasons in the series in 2018 and 2019.
John Hunter Nemechek won the first stage, led five times for 66 laps and was in contention for the championship on the final overtime restart before suffering a tire issue and finishing 28th to end up fourth in the final championship standings.
Corvette Racing finished seventh Saturday at the Eight Hours of Bahrain to close the 2023 FIA World Endurance Championship and put a cap on a historic season.
The 25-year-old Custer from Ladera Ranch, California, led a race-high 96 of 202 over-scheduled laps and capitalized on an overtime shootout to win the finale in the desert state and become the 33rd different competitor to win an Xfinity Series championship.
The 19-year-old Smith from Johnston, Iowa, notched his first career victory at Phoenix in March, made the 2023 Xfinity Playoffs and finished sixth in the final standings during his first full-time campaign in the Xfinity circuit with Joe Gibbs Racing.
In his first career appearance in the NASCAR Cup Series Championship Four, William Byron posted a best-lap of 27.15 seconds, at 132.597 mph, in the final round of qualifying to claim the pole position for the NASCAR Cup Series Championship Race at Phoenix Raceway.
After an overtime restart that saw title contenders engage in a breathtaking three-wide battle down the backstretch, Cole Custer deftly negotiated a tightly bunched pack of cars to win the NASCAR Xfinity Series Championship race and the series title on Saturday at Phoenix Raceway.