Having already won the Daytona 500 last month, driver Dale Earnhardt Jr. and crew chief Steve Letarte had nothing to lose when they gambled on fuel in Sunday's race at Las Vegas Motor Speedway.
Rookie Ty Dillon claimed his first career pole in the Nationwide Series after winning knockout qualifying at Las Vegas Motor Speedway.
Last Saturday, Busch won a Nationwide race at Phoenix International Raceway for a record third straight time, even though the scheduled 200-lap event there was cut short by 32 laps due to rain. He also earned his record- extending 64th career win in the series.
Rule changes for the intermediate tracks this season include statically setting the race car ride height and eliminating the pre-and-post-race front- height rules and inspections. The package also contains a square leading edge on the splitter, side-skirt and rear-fascia adjustments and an eight-inch rear spoiler. A 43-inch by 13-inch radiator pan are among the changes as well.
Sprint Cup Series
Kurt Busch will try to become the first driver in a decade to compete in both the Indianapolis 500 and the Coca-Cola 600 on the same day.
After making just his second start with Stewart-Haas Racing, Kevin Harvick is virtually guaranteed of clinching a spot in this year's Chase for the Sprint Cup championship by winning at Phoenix International Raceway.
Brad Keselowski made it a weekend sweep in NASCAR Sprint Cup and Nationwide Series pole wins at Phoenix International Raceway.
Brad Keselowski won the inaugural knockout- style of qualifying in the Sprint Cup Series after setting a new track record at Phoenix International Raceway on Friday.
NASCAR is using knockout qualifying for all points-paying races in Sprint Cup with the exception of last week's Daytona 500, in which the starting lineup was determined by time trials and the twin qualifying races (Budweiser Duel).