FS1 will adjust its broadcasting booth for Sunday's Toyota/Save Mart 500 at Sonoma Raceway.
According to The Athletic's Jordan Bianchi, Clint Bowyer will not call the race due to a personal matter.
Per Racer's Kelly Crandall, Larry McReynolds and Tony Stewart will join announcer Mike Joy on commentary.
After retiring in 2020, Bowyer became a staple of FOX Sports' NASCAR coverage. He earned 10 Cup Series victories throughout his racing career before taking on the new opportunity.
McReynolds has worked alongside Bowyer since re-joining FOX Sports this year. The renowned crew chief also returned to that familiar role in April for the first time in 22 years.
FOX brought onboard Stewart, a NASCAR Hall of Famer and three-time NASCAR Cup Series champion, in January.
Chase Elliott will look to expand his lead in the Cup Series standings with his first road-course victory at Sonoma. Martin Truex Jr. seeks his fourth victory at the course, while Kyle Busch is coming off Saturday's Truck Series triumph.
The Toyota/Save Mart 350 starts at 4 p.m. ET.