Two-time NASCAR Cup Series champion Kyle Busch has been hospitalized with an undisclosed severe illness. He will not compete in this weekend’s Coca-Cola 600 at Charlotte Motor Speedway.

A statement from the Busch family read: “Kyle has experienced a severe illness resulting in hospitalization. He is currently undergoing treatment and will not compete in any of his scheduled activities this weekend at Charlotte Motor Speedway.” The family added, “We ask for understanding and privacy as our family navigates this situation.”

Busch, 41, is a two-time Cup champion and an undoubtedly future Hall of Famer. He has made 762 career starts with 63 wins in the Cup Series since debuting in 2004. Busch captured championships in 2015 and 2019, amassing 234 victories across all three NASCAR national series. He holds the all-time records for wins in both the NASCAR O’Reilly Auto Parts Series (102) and NASCAR Craftsman Truck Series (69).

While Busch has had a prolific career, he has faced challenges lately. After leaving Joe Gibbs Racing for Richard Childress Racing following the 2022 season, he won three times in his first year with RCR but has not secured a victory since June 2023. He started this current season on pole for the Daytona 500 but has struggled since—registering just two top-10 finishes across 12 races and no lap leads after Daytona. Busch currently ranks 23rd in the points following an eighth-place finish at Watkins Glen earlier this month.

Sunday’s race will mark the first time in more than a decade that Busch misses a Cup Series event. Busch previously won the Coca-Cola 600 in 2018, and Austin Hill will replace him for Sunday’s contest. Richard Childress Racing stated: “Kyle Busch’s health is our utmost priority… We wish him a safe and speedy recovery.” The team also noted, “His No. 8 Chevrolet will be ready and waiting for him. We’re thankful to Austin Hill for stepping in to drive the No. 8 Chevrolet this weekend.”