NASCAR Next: 23XI racer Corey Heim on a day's work, Tyler Reddick's weight-room prowess - Corey Heim is a developmental driver for the 23XI Racing team, co-owned by Michael Jordan and Denny Hamlin. - Heim balances his part-time racing schedule with simulator work, physical training, and personal hobbies like fishing and golf. On the progression track, Corey Heim appears to have slipped the rail. Last year, his fourth consecutive successful year in NASCAR’s Truck Series, was the most dominant season in that series’ 31-year history. His 12 wins were an all-time single season high, and the 12th, in the season finale, won him the championship. Several months later, he was out of a full-time job. But only on paper. “I just tell people it’s all part of the process,” the 24-year-old Georgia native says. Preorder our Dale Earnhardt book hereHeim is officially part of the 23XI team co-owned by Michael Jordan and Denny Hamlin — he’s what the modern racing industry calls a “developmental driver.” His 2026 schedule includes a dozen Cup Series races in a fourth 23XI car, where he’s teammates with Riley Herbst, Bubba Wallace and this year’s dominating driver so far, Tyler Reddick. He had seven Cup starts over the 2024-25 seasons. He’s also making at least six starts (or more, depending on sponsorship opportunities) for a fellow Toyota team in the Truck Series, David Gilliland’s Tricon Garage, with whom he’s raced the past three years after two part-time seasons with Kyle Busch’s truck team. He’s already run four of those truck races on his 2026 schedule, and resorting to form, he won two of them. He’s also made two of his 12 Cup starts, with finishes of 15th last week at Kansas and 28th at the season-opening Daytona 500, where he led eight laps. Heim grew