Lap-by-Lap: Bristol

CHECKERED FLAG: Kyle Busch wins the Food City 500 by edging Jeff Burton at the line.

Lap 502 -- Jeff Burton goes by Jeff Gordon as Kyle Busch spins his wheels.

Lap 502 -- GREEN FLAG: Kyle Busch leads the green-white-checkered finish at Bristol.
1. Kyle Busch
2. Jeff Gordon
3. Jeff Burton
4. Greg Biffle
5. Kevin Harvick

Lap 498 -- Carl Edwards and David Stremme head to pit road. Neither stopped during the last caution.

Lap 497 -- YELLOW FLAG NO. 15: Kasey Kahne makes contact with David Ragan, and Ragan slides to a stop at the bottom of the track.

Lap 496 -- Kyle Busch's lead is five car-lengths, with Jeff Gordon and Jeff Burton moving by Greg Biffle.

Lap 493 -- Denny Hamlin has slowed. He radioed to his crew, "We're blowing up. We're blowing up."

Lap 492 -- Jeff Gordon and Jeff Burton move to fourth and fifth with fresh tires.

Lap 491 -- GREEN FLAG: Kyle Busch leads the field to green in a single-file restart with nine laps to go. The top five cars did not pit, while positions 6-15 did pit.
1. Kyle Busch
2. Denny Hamlin
3. Greg Biffle
4. David Stremme
5. Carl Edwards

Lap 486 -- Kyle Busch, Denny Hamlin and Greg Biffle stay out, but Jeff Burton, Jeff Gordon and Kevin Harvick stop for tires. Ten lead-lap cars pitted.

Lap 485 -- YELLOW FLAG NO. 14: Caution is out for Jimmie Johnson's flat tire.

Lap 485 -- LEAD CHANGE: As the leaders go by Jimmie Johnson's slow car, Kyle Busch passes Denny Hamlin for the lead.

Lap 484 -- Jimmie Johnson has a flat right-front tire and is slow. He stays out to get a caution.

Lap 480 -- With 20 laps to go, the leaders continue to work through lapped traffic. Denny Hamlin's lead is now 0.227 seconds.

Lap 470 -- Three cars are out of the race, while there have been 10 different leaders. Denny Hamlin holds a slight advantage ahead of Kyle Busch.

Lap 455 -- As they work through lapped traffic, Kyle Busch is on leader Denny Hamlin's tail.

Lap 447 -- Kasey Kahne, who spun earlier in the race, is now running 23rd in his fight to stay inside the top 35 in owner points.

Lap 441 -- Juan Montoya's problems continue, as he heads to pit road with a flat tire.

Lap 428 -- Kyle Busch goes around Kevin Harvick for second, while Denny Hamlin has built a nearly 1-second lead.

Lap 424 -- GREEN FLAG: Denny Hamlin leads the field to green again.
1. Denny Hamlin
2. Kevin Harvick
3. Kyle Busch
4. Jeff Gordon
5. Greg Biffle (Continued)