MOORESVILLE, N.C. — Michael Annett, a former racecar driver who made 436 combined starts in NASCAR’s three national touring series, died Friday. He was 39.

JR Motorsports, one of Mr. Annett's former teams, posted the news on social media. No cause of death was announced.

“Our thoughts and prayers are with the entire Annett family with the passing of our friend Michael Annett,” the team wrote. “Michael was a key member of JRM from 2017 until he retired in 2021 and was an important part in turning us into the four-car organization we remain today.”

According to NASCAR, Mr. Annett made 321 starts in the Xfinity Series, 158 of which came with JRM.

In 2019, Mr. Annett won the season-opening race at Daytona International Speedway in the No. 1 JRM Chevrolet for his only win at the national le

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