The 2024 O'Reilly Auto Parts Series champion from Riverton, Illinois, dropped from 2nd to 4th in the Chase standings and trails the points lead by 30 points following an early exit from an on-track accident at Sin City.
The 20-year-old Day from Clovis, California, led a race-high 136 of 201 laps and fended off Carson Kvapil over a late side-by-side battle for his third O'Reilly Auto Parts Series career victory in Sin City.
The three-time Daytona 500 champion from Chesterfield, Virginia, clocked in a lap of 186.787 mph in 28.910 seconds for his 53rd Cup career pole, fifth of 2026 and second at Sin City.
The 20-year-old Day from Clovis, California, posted a single qualifying lap of 180.856 mph in 29.858 seconds for the second O'Reilly Auto Parts Series pole of his career and of the 2026 season in Sin City.
Kyle Larson would dominate the Hollywood Casino 400 by leading the most laps, sweeping the stages, and even rallying back to take the lead away from Chase Briscoe.
Crew chief Patrick Donahue, car chief Dillon Bassett and engineer Morgan Olsen have been barred for the next four O'Reilly events due to fallen ballast from Patrick Staropoli's No. 48 entry during this past weekend's event at Sin City.
The three-time Daytona 500 champion from Chesterfield, Virginia, led a race-high 134 of 267-scheduled laps and prevailed in a 50-lap dash to the finish to achieve his first Cup victory of 2026 at Sin City.
The reigning two-time Cup Series champion from Elk Grove, California, went from seventh to first during a 47-lap dash that enabled him to achieve his first NASCAR victory of the 2026 season in Sin City.
The 2024 Coca-Cola 600 & 2025 All-Star Race champion from Norman, Oklahoma, clocked in a pole-winning lap at 187.156 mph in 28.853 seconds for his first Cup pole of 2026 at Sin City.
