MARTINSVILLE -- A week after Kurt Busch bumped Matt Kenseth out of the lead to win at Bristol, a Kenseth bump sent Busch spinning Sunday at Martinsville Speedway.

Kenseth sent Busch into the wall on lap 467 as they raced for eighth.

"Guess we're even with the 17 car,'' Busch said. "We'd gotten around him. He bumped me up the track. We came in and got four fresh tires there at the end, but we were just so darn loose that we couldn't use them to our advantage.''

Busch finished 11th. Kenseth crashed late and finished 24th.

Also angry

Rookie Denny Hamlin wasn't pleased with how Mark Martin raced him. It wasn't the first time, according to Hamlin, he's had problems with Martin, who is considered one of the cleanest drivers.

"I respect Mark Martin like no other,'' said Hamlin, who finished 37th.

"I understand he's trying to get his lap back, but gosh, you've got to give room to the lead-lap cars. This is what happens. [Martin] was a lap down and he bounced off the wall and came into me. This ain't the first time.

"At Las Vegas he ran me into the wall. There's so many races that I can say that [Martin] didn't give me any room.

"I understand I'm the rookie and he's the veteran, but we're all on the same race track. You've got to give room. He just crowded me every time I was around him."

New leader

Kenseth's woes helped Jimmie Johnson retake the points lead.

Kenseth entered as the leader but a late crash dropped him to 24th. He fell to third in the points.

Johnson, who finished third, leads Mark Martin by 59 points heading into next weekend's race at Texas Motor Speedway.

Lost opportunity

Greg Biffle watched his chances for a good run end early after contact with Jeff Burton. They were racing in the top 10 when they collided on lap 109.

"It's the first good Martinsville car I've ever had here and it looked like I was going to have a top-10 day for sure,'' Biffle said.

Biffle finished 31st. He's never placed better than 17th in seven career Martinsville starts.

Tough lesson

Only one of the six rookies who competed Sunday had raced at Martinsville Speedway before. That was Hamlin, who finished 37th.

Reed Sorenson was the top rookie. He placed 12th.

"Today is the toughest race I've ever been in as far as lapped cars go,'' Sorenson said.

"It seemed like some people were more willing to give a little bit. Then you'd get them the next time and they would be more aggressive."

On track today

NASCAR's testing of its car of the future continues today at Martinsville Speedway.

The car, which will debut next year at the Bristol spring race, also will run at Martinsville as the car is phased in over a three-year period.

Richard Childress Racing and NASCAR are each scheduled to test the car today. Kevin Harvick is expected to drive for Childress with Brett Bodine driving the NASCAR vehicle.

The test will be open to the public.

Pit stops

Tony Raines finished 21st in his first race of the season for Hall of Fame Racing. He took over after Terry Labonte ran the first five races. ... Brian Vickers' eighth-place finish meant all four Hendrick Motorsports cars placed in the top eight. ... Johnson's third-place finish was his eighth top-10 finish in nine Martinsville races. ... This is only the second time in Stewart's career he's won a race before May. He won at Atlanta in March 2002.