The 2021 Cup Series champion from Elk Grove, California, led a race-high 199 of 267-scheduled laps en route to his third Cup victory of 2022 and first at Miami.
The 24-year-old Gragson from Las Vegas, Nevada, became the second Xfinity competitor to clinch a Championship 4 spot by claiming his first elusive victory at Miami.
NASCAR travels to Homestead-Miami Speedway this week as the Playoffs continue. Team Penske’s Joey Logano clinched his spot in the Cup Series Championship 4 Round with a win at Las Vegas last weekend.
The 23-year-old native from Charlotte, North Carolina, rallied from a two-race slump to claim his first Cup victory in Miami following a late dominating run.
Myatt Snider in his No.2 Richard Childress Racing Chevrolet brought his car to the Checkered Flag in first place, winning it the hard way, in double overtime, in his 39th start. For two consecutive weeks, the NASCAR Xfinity Series has had first-time winners.