FONTANA, Calif. -- Kyle Busch became the youngest winner in NASCAR's top series Sunday night, a feat that was almost an afterthought with most of the focus on the battle for the final spots in The Chase for the championship.

At the end of Sony HD 500, the bottom of the top 10 in the Nextel Cup point standings was shaken up, with Matt Kenseth and Jamie McMurray in and Ryan Newman and Jeff Gordon out with only one more race before the start of the 10-man, 10-race finale.

That didn't bother the 20-year-old Busch, the brother of reigning Cup champion Kurt Busch, as he celebrated his breakthrough victory at California Speedway.

The previous youngest winner was Donald Thomas, who was four days older than Busch when he won in Atlanta in November 1951.

Driving a Chevrolet for Hendrick Motorsports, Busch led 95 laps on the way to the victory in his 31st career start.  More