The 22-year-old Sunrise Ford Racing competitor from Fullerton, California, claimed back-to-back victories in the ARCA Menards Series West after claiming a dominant win at Sonoma.
The reigning ARCA Menards Series East champion from Johnston, Iowa, will commence his Xfinity Series debut with Joe Gibbs Racing at Road America in July.
The 2018 Cup Series champion led 20 of 242 over-scheduled laps and prevailed in a late crossover battle with Kyle Busch to capture the inaugural Cup event in Madison, Illinois.
The former IndyCar and Indianapolis 500 champion led a race-high 55 of 70 laps and executed a bold two-tire strategy to win the 30th and final IndyCar event at the Belle Isle Circuit.
The 40-year-old Allmendinger from Los Gatos, California, rallied from last place on the opening lap to assume the lead during a four-lap shootout for his second Xfinity victory of 2022.
The 19-year-old Heim from Marietta, Georgia, prevailed over a late caution, a preferred lane choice and an overtime shootout to claim the first of three Triple Truck Challenge bonuses at Gateway.
The 22-year-old Smith from Huntington Beach, California, will be filling in for Buescher, who will not compete at Gateway following a positive COVID-19 test.