Kyle Larson dominated throughout the day on Sunday, sweeping the stages and leading 181 laps on his way to the win in the Pennzoil 400 at Las Vegas Motor Speedway.
Ryan Blaney passed Kyle Larson for second on lap 292 and held the position to claim the championship as Ross Chastain took the win at Phoenix. It is Blaney's first Cup championship.
Ryan Blaney passed Aric Almirola for the lead with 22 laps to go and pulled away to win the Xfinity 500 at Martinsville, winning his way into the Championship 4.
"I already had my spot in the Round Of 8 sewed up," Byron said, "so I was out there just enjoying a leisurely Sunday drive. But things always get a lot less leisurely once I park the car for a NASCAR inspection."
Ryan Blaney won Stage 1 at Talladega Superspeedway and held off Kevin Harvick in a wild finish to win the YellaWood 500 and lock in his spot in the Round Of 8.
William Byron took charge on the final restart, overtaking Chase Briscoe and Bubba Wallace for the lead on Lap 262. Byron held on to win the AutoTrader EchoPark Automotive 400 at Texas.
The 2021 Cup Series champion from Elk Grove, California, led a race-high 277 of 300-scheduled laps en route to the first Xfinity victory for himself and Hendrick Motorsports at the Last Great Colosseum.
Brandon Jones followed his Darlington win with a fifth-place run to lead Toyota in the NASCAR Xfinity Series race at Bristol Motor Speedway on Saturday evening.
The three-time Daytona 500 pole winner from Tucson, Arizona, posted a pole-winning lap at 128.675 mph in 14.912 seconds, which was enough to claim his second Cup Series pole position of the 2025 season and his second in a row at Thunder Valley.
