Corey Heim earns shock first Cup win after slamming doors with Reddick in San Diego

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It was 23XI vs. 23XI at Naval Base Coronado on Sunday, as championship leader Tyler Reddick battled part-time teammate Corey Heim in the closing laps.

As they battled side-by-side for the lead, they slammed doors and Heim bounced off the wall, before driving off with the win. Reddick suffered a flat tire soon after, and limped home to a 25th-place finish. He now holds just a eight-point lead over Denny Hamlin in the championship standings.

For the 23-year-old Heim, this first-career victory comes in just his 13th career start, and in his sixth appearance of the 2026 season. He was led by crew chief Bootie Barker atop the pit box for the No. 67 Toyota.

Watch: Heim takes late lead, wins at Coronado

It was also a 1-2 finish for the Michael Jordan-owned team, with Bubba Wallace fighting back from two laps down to earn his best finish of the season.

Kyle Larson finished third, Zane Smith fourth, and AJ Allmendinger fifth. Chris Buescher, Ross Chastain, Riley Herbst, Ryan Blaney, and Michael McDowell filled out the remainder of the top ten.

Making his NASCAR Cup debut, ex-Formula 1 driver Kevin Magnussen set the fastest lap near the end of the race, and finished 27th.

Watch: Heim emotional after first career win: ‘I hope I don’t wake up from this dream’

Stages 1 and 2

Shane van Gisbergen, Trackhouse Racing

Van Gisbergen led the race from pole position, but as drivers managed the tires, Blaney took control and drove off with the lead.

The first incident was for A. Dillon, who went for a spin. Blaney pitted from the lead halfway through the stage, and several drivers followed suit.

Wallace led for a pit before Van Gisbergen passed him, and they were among a group trying to go longer, saving a set of tires.

However, that strategy bit them as Ricky Stenhouse Jr. stalled on track, triggering the first full-course yellow of the race. During the caution, Christopher Bell climbed out of the car, as he was driving injured and planned to hand over control to 18-year-old relief driver Brent Crews.

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Blaney restarted back in eighth on fresh tires, and quickly cut through the field, taking the lead with plenty of time left in the stage.

Fading on older tires, SVG and Wallace decided to flip the stage and pit early, bringing several others with them.

However, 23XI Racing failed to get the right-front secured, and it came off, forcing a full-course caution. Wallace was penalized two laps, and two crew members will be suspended later in the week.

Wallace was irate as the stage ended under caution, with Blaney winning Stage 1.

For the start of Stage 2, a new group of cars cycled to the front, with Connor Zilisch leading Preece. As SVG tried to make his way back through the field, he made contact with Buescher, sending him spinning. The pack narrowly avoided a pileup, and Buescher only lost a couple of spots after a full 360-degree spin.

The next caution was for Brent Crews, as the engine detonated on the No. 20 JGR Toyota, meaning Bell will earn just one point.

As the race continued, the pivotal moment was a Lap 32 restart as Hill missed the entry to Turn 1 while side-by-side for the lead with Zilisch. They pounded the outside wall, destroying both cars, as well as SVG, who was right behind them. Several other cars piled in, suffering varying levels of damage, but the leading Red Bull Chevrolets were unable to continue.