Kyle Busch parked for Sunday's race after retaliation

FORT WORTH, Texas

"Boys, have at it" remains NASCAR's policy. It just might be better defined after Kyle Busch was parked for Saturday's Nationwide race and today's Sprint Cup race.

NASCAR reacted after Busch wrecked Ron Hornaday under caution during Friday night's Camping World Truck race at Texas Motor Speedway. Busch's actions were in retaliation for an incident that sent both he and Hornaday into the wall.

Busch, seventh in the point standings, is the third Cup driver to be parked for a Cup race in the past decade. NASCAR parked Kevin Harvick at Martinsville in 2002 and Robby Gordon at Pocono in 2007.

Michael McDowell will drive Busch's Cup car today. Denny Hamlin drove for Busch in Saturday's Nationwide race.

Even though Busch will miss today's race, it is not the end of the "Boys, have at it" policy that allows drivers to police themselves more often, NASCAR President Mike Helton said.

"The responsibility that over the past two or three seasons we've given back to the drivers came, I think, with a very clear understanding that there could be a line that got crossed," Helton said.

Harvick, who owns the truck Hornaday drove, said Busch's penalty provides better guidance. Hornaday was in contention for the title before the incident.

"I think it's pretty clear that they want to put a defined line as to where everything is, and I think that is a good thing," Harvick said. "... We all make mistakes and we all do things sometimes out of character. But if things continue to progress, we're going to hurt somebody."

Busch was upset because he, Hornaday and another truck were running three abreast when Hornaday's truck, running in the middle, wiggled and moved up the track, forcing Busch into the wall. Hornaday also hit it.

"He got loose and got into me and knocked me into the wall, and I lost my cool, yeah, no doubt about it," Busch said Friday night. "I retaliated. It's certainly my fault for doing that."

Notes: Kasey Kahne was the fastest in Saturday's final practice session with a lap of 185.912 mph. He was followed by Marcos Ambrose (185.656 mph) and David Ragan (185.446).