Hendrick Motorsports and Kaulig Racing were sanctioned L2-level penalties for unapproved modifications pertaining to the hood louvers from their respective vehicles.
The 2021 Cup Series champion from Elk Grove, California, is set to achieve a milestone start in his ninth full-time season as a competitor in NASCAR's premier series.
The 25-year-old Byron from Charlotte, North Carolina, led 64 of 317 over-scheduled laps and prevailed in two late-race restarts, including one in overtime, to fend off teammate Kyle Larson and nab second consecutive Cup victory in the desert valley.
The 18-year-old Smith from Johnston, Iowa, led a race-high 92 of 200-scheduled laps and fended off teammate Ryan Truex en route to his first Xfinity career win in his 13th series start.
The 28-year-old Hill from Winston, Georgia, led three times for 19 of 200-scheduled laps, including the final two as he tracked and overtook rookie Chandler Smith prior to the final lap for his second Xfinity victory of the 2023 season.
The two-time Xfinity Series champion from Olive Branch, Mississippi, led the final 10 of 212 over-scheduled laps to become the 42nd different competitor to win the Great American Race.
The 28-year-old Snider from Charlotte, North Carolina, is set to achieve a milestone start in his first of select Xfinity starts this season with Joe Gibbs Racing.