The 2023 ARCA Menards Series champion from Menlo Park, California, led 35 of 200-scheduled laps and outdueled a trio of JR Motorsports' competitors to become the 35th competitor to win an Xfinity Series championship at Phoenix.
Heim, the 23-year-old Heim from Marietta, Georgia, capitalized through double overtime attempts to win the finale at Phoenix and the NASCAR Truck Series championship.
The two-time Daytona 500 champion from Charlotte, North Carolina, led a race-high 304 of 500-scheduled laps and clinched a Championship 4 berth with a dominant victory at Martinsville.
The 20-year-old Gray from Artesia, New Mexico, led the final 52 of 253 over-scheduled laps and capitalized on an overtime shootout to score his first Xfinity Series career victory in his 45th series start at Martinsville.
William Sawalich battled back through the field after getting spun and led Toyota with a third-place finish at Iowa Speedway on Saturday evening. Taylor Gray (seventh) put a second Joe Gibbs Racing Supra in the top-10.
The 2023 Cup Series champion from High Point, North Carolina, clocked in a pole-winning lap at 134.191 mph in 23.474 seconds for his third Cup pole of 2026 in Newton, Iowa.
The 39-year-old Sieg from Tucker, Georgia, clocked in a pole-winning lap at 131.436 mph in 23.966 seconds for his first O'Reilly Auto Parts Series career pole in his 423rd series start.
