The two-time Xfinity Series champion from Corning, California, led a race-high 38 of 86 over-scheduled laps before fending off Chastain in overtime to grab his second Cup Series career victory.
Chase Elliott finished third in the M&M's Fan Appreciation 400 at Pocono, but was awarded the win when first and second place winners Denny Hamlin and Kyle Busch were disqualified.
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.
Elliott started on the pole and swept all the stages, taking the win with a pass for the lead on Corey LaJoie with two laps to go. It was Elliott's third win of the season, and he leads the points standings.
The two-time Xfinity Series champion from Corning, California, led the final 16 laps and muscled away from Elliott en route to his first win in his 92nd start in NASCAR's premier series.
The 19-year-old Gibbs from Charlotte, North Carolina, led five of 48 over-scheduled laps as he executed a bold final lap pass on Larson for his eighth Xfinity career victory.
The No. 5 Hendrick Motorsports entry piloted by Kyle Larson and led by crew chief Cliff Daniels become the 10th team to be penalized for a loose wheel infraction following Sonoma.
