The 2020 Cup Series champion was awarded his fourth victory of 2022 at the Tricky Triangle following the post-race disqualifications of race winner Denny Hamlin and runner-up Kyle Busch.
The 24-year-old Gragson from Las Vegas, Nevada, led a race-high 43 of 90 laps, including the final 21, to record his third Xfinity victory of 2022 at the Tricky Triangle.
The 20-year-old Smith from Talking Rock, Georgia, led all but 11 of 60 laps en route to his second victory of the 2022 Truck season at the Tricky Triangle.