CONCORD, N.C. (AP) — Kyle Busch, the renowned two-time NASCAR champion, passed away at the age of 41 after battling severe pneumonia that developed into sepsis. His family released a statement detailing the difficult medical circumstances that led to his untimely death on Thursday. The medical evaluation, received on Saturday, confirmed the severe progression of his pneumonia into sepsis, which resulted in rapid and overwhelming complications.

Busch had shown signs of illness while racing at Watkins Glen on May 10, where he reported to his team that he was experiencing a sinus cold and requested medical assistance after the race. Despite this, he managed to secure a victory in the Trucks Series race at Dover just a week prior to his death and finished 17th in the All-Star race on Sunday.

On Wednesday, while preparing for the Coca-Cola 600 at Charlotte Motor Speedway, Busch was using a Chevrolet racing simulator in Concord when he became unresponsive. Emergency services were called when an unidentified individual reported Busch was experiencing shortness of breath, felt very hot, and was coughing up blood. They described him lying on the bathroom floor, although conscious, when help arrived. He was subsequently transported to a hospital in Charlotte, where he later passed away.

Sepsis is a severe and potentially life-threatening condition that arises when the body's immune response to infection goes into overdrive, causing damage to its own tissues and organs. It leads to widespread inflammation, the formation of microscopic blood clots, and leaking of blood vessels, making it a critical medical emergency.

Brad Keselowski, a fellow NASCAR driver, indicated that he was aware Busch had not been feeling well recently but noted that his performance in the Truck race the week prior had alleviated concerns. He remarked on the pressures drivers face regarding their health while participating in multiple races, highlighting the fear of being replaced if they sit out due to illness.

Throughout his illustrious two-decade career, Busch amassed a remarkable total of 234 wins across NASCAR's top three series, more than any other driver in history. In tribute to Busch, all 39 drivers participating in the upcoming race were set to display a black No. 8 decal on their cars to honor his legacy.

The passing of Kyle Busch sent ripples through the NASCAR community and beyond, reflecting on his profound impact on the sport and the admiration he garnered throughout his career. His contributions to NASCAR will be remembered, and his legacy will endure in the hearts of fans and fellow drivers alike.