Lap 503 -- CHECKERED FLAG: Kyle Busch wins the Food City 500 at Bristol Motor Speedway.

Lap 502 -- WHITE FLAG: Kyle Busch pulls away as Jimmie Johnson challenges Denny Hamlin for second.

Lap 501 -- GREEN FLAG: Kyle Busch gets the race going once again for a green-white-checkered finish.
1. Kyle Busch
2. Denny Hamlin
3. Jimmie Johnson
4. Jeff Gordon
5. Kasey Kahne

Lap 495 -- Dale Earnhardt Jr. comes down pit road for tires. Clint Bowyer and Carl Edwards also come in for tires.

Lap 494 -- YELLOW FLAG NO. 9: Joey Logano blows an engine.

Lap 490 -- With 10 laps to go, Jimmie Johnson is side-by-side with Kasey Kahne for third, then takes the position. Jeff Gordon is behind Kahne.

Lap 485 -- Kyle Busch continues to cruise in front of Denny Hamlin, but Kasey Kahne has his hands full with Jimmie Johnson for third.

Lap 480 -- Despite the weak engine, Marcos Ambrose is still hanging on in 10th position.

Lap 475 -- With 25 laps to go, Kyle Busch leads Denny Hamlin by 0.622 seconds.

Lap 470 -- Jimmie Johnson and Jeff Gordon go by teammate Mark Martin for fourth and fifth positions, respectively.

Lap 465 -- Jeff Burton moves into seventh position after passing Ryan Newman.

Lap 460 -- GREEN FLAG: Kyle Busch leads the field to green.
1. Kyle Busch
2. Denny Hamlin
3. Kasey Kahne
4. Mark Martin
5. Jimmie Johnson

Lap 453 -- YELLOW FLAG NO. 8: David Stremme goes for a spin going into Turn 3 after getting loose and getting touched by Dale Earnhardt Jr.

Lap 450 -- Marcos Ambrose has lost a cylinder in his car and is in eighth position.

Lap 449 -- GREEN FLAG: Kyle Busch gets the race going again.
1. Kyle Busch
2. Denny Hamlin
3. Kasey Kahne
4. Mark Martin
5. Jimmie Johnson

Lap 443 -- LEAD CHANGE: Kyle Busch gets the lead back by winning the race off pit road.

Lap 442 -- LEAD CHANGE: Denny Hamlin is scored as the leader.

Lap 441 -- Leaders head to pit road:
• Jeff Burton is free and gets an air-pressure adjustment
• Jimmie Johnson is tight and gets changes, four tires
• Kyle Busch reverses an air-pressure adjustment
• Denny Hamlin wants his car to be more free and gets changes
• Dale Earnhardt Jr. gets the free pass

Lap 440 -- YELLOW FLAG NO. 7: Kevin Harvick is against the wall with a tire down.

Lap 435 -- David Stremme is having a stout run and is in 14th position on the lead lap.

Lap 430 -- David Reutimann sneaks back into the top 10, passing Juan Montoya.

Lap 425 -- With 75 laps to go, the leaders work lapped traffic and one pit stop remains.

Lap 420 -- Jimmie Johnson pulls to Kyle Busch's rear bumper as the leader navigates through a pack of slow traffic.

Lap 415 -- Jeff Burton continues his climb to the front and is up to eighth after passing Jeff Gordon.

Lap 410 -- Mark Martin has the fastest car this lap while running in fifth place.

Lap 405 -- David Reutimann is running in 11th position. His worst position on the day was 15th earlier in the race.

Lap 400 -- With 100 laps to go, Kyle Busch sets the pace by 1.040 seconds.

Lap 395 -- Jeff Burton is into the top 10 after an up-and-down day and battling through the field. He started 40th.

Lap 390 -- Denny Hamlin, Kasey Kahne and Mark Martin work their way through a tight pack of lapped cars. Hamlin, Kahne and Martin run third, fourth and fifth, respectively.

Lap 380 -- Clint Bowyer, in 13th, has the fastest car this lap.

Lap 375 -- Kasey Kahne is up to fourth position.

Lap 369 -- LEAD CHANGE: Kyle Busch goes to the outside of Jimmie Johnson and passes him for the lead as they go around slower traffic.

Lap 362 -- Marcos Ambrose has dropped to sixth and he tells his crew his car feels like it could be losing a motor. His lap times are solid, however.

Lap 360 -- Greg Biffle is in the garage and done for the day due to an engine failure.

Lap 357 -- Kyle Busch nudges Denny Hamlin out of the way and takes second place from his teammate.

Lap 350 -- Kyle Busch has the fastest car this lap, but he's still in third behind Jimmie Johnson and Denny Hamlin.

Lap 346 -- A.J. Allmendinger is having a solid day, although he is in 17th. He's still on the lead lap.

Lap 340 -- Ryan Newman is running eighth and holding steady. He had a vibration before the pit stops.

Lap 333 -- Kurt Busch is up to 12th place despite his nose damage from an early crash.

Lap 329 -- GREEN FLAG: Jimmie Johnson gets the race going again.
1. Jimmie Johnson
2. Denny Hamlin
3. Kyle Busch
4. Marcos Ambrose
5. Kasey Kahne

Lap 326 -- Matt Kenseth is on pit road for a broken front splitter.

Lap 321 -- LEAD CHANGE: Jimmie Johnson wins the race off pit road.

Lap 320 -- Leaders hit pit road:
• David Stremme gets tires and minor changes
• Ryan Newman is loose and gets a track-bar adjustment
• Jimmie Johnson gets track-bar adjustment
• Kyle Busch gets minor changes and tires
• Dale Earnhardt Jr. gets the free pass

Lap 319 -- YELLOW FLAG NO. 6: Brian Vickers cuts a tire.

Lap 318 -- LEAD CHANGE: Denny Hamlin catches Kyle Busch and overtakes him for the lead.

Lap 313 -- Dale Earnhardt Jr. loses a lap to leader Kyle Busch, putting 17 cars on the lead lap.

Lap 311 -- David Gilliland is into the wall, but there is no caution. He gets to pit road safely.

Lap 308 -- Mark Martin is up to eighth position although the car is beginning to push in the corner.

Lap 303 -- Greg Biffle reports his car has lost a cylinder in the engine. He runs in 20th.

Lap 300 -- Kyle Busch still leads with 200 laps to go.

Lap 296 -- Jeff Gordon is telling his crew his car is very tight and he's just holding on. He tells his crew there could be a problem with his right-front tire and for the team to be ready in case.

Lap 291 -- Make that fifth position for Kasey Kahne as he continues his slow climb.

Lap 289 -- Kasey Kahne is up to sixth position, matching his highest running position of the day.

Lap 283 -- Denny Hamlin has the fastest car on the track in third as the leaders work through slow traffic.

Lap 277 -- Ryan Newman is running 10th but he tells his crew he feels a vibration and has felt it for several laps.

Lap 273 -- Dale Earnhardt Jr. tells his team the car's air pressure may be off as his climb to the front stalls. He runs in 17th.

Lap 269 -- Just 21 cars remain on the lead lap, with Tony Stewart the final car on the lead lap.

Lap 263 -- Marcos Ambrose is now up to fourth position and chasing down Denny Hamlin for third.

Lap 255 -- Jeff Burton, winner of this race a year ago, has the fastest car this lap. He runs in 15th.

Lap 250 -- Halfway and Kyle Busch continues to lead.

Lap 247 -- Denny Hamlin runs to the rear bumper of Marcos Ambrose and nearly hits him. The reason stems from previous laps when Ambrose touched Hamlin, getting him loose. The two teams are pitted next to each other.

Lap 240 -- Tony Stewart has slowed slightly and dropped to 20th after once being inside the top 10. Stewart is too loose coming off the corners, he says.

Lap 236 -- Greg Biffle's right-rear tire is going soft, he reports to his crew.

Lap 226 -- Clint Bowyer is up to 12th position and continues to move forward through the pack.

Lap 220 -- Kasey Kahne is having a strong run and is up to eighth position.

Lap 214 -- Kurt Busch is in 14th position but has a damaged nose on his No. 2 after getting hit during an early spin by Todd Bodine.

Lap 206 -- Travis Kvapil is running in 12th, but the team will shut down if it does not find sponsorship before next week's Martinsville race.

Lap 200 -- Kyle Busch continues to lead as the race gets 200 laps old.

Lap 196 -- GREEN FLAG: Kyle Busch gets the race back under way.
1. Kyle Busch
2. Jimmie Johnson
3. Denny Hamlin
4. Jeff Gordon
5. Marcos Ambrose

Lap 193 -- LEAD CHANGE: Michael Waltrip pits, giving the lead back to Kyle Busch.

Lap 192 -- LEAD CHANGE: Michael Waltrip stays out to lead.

Lap 191 -- LEAD CHANGE: Denny Hamlin is credited with leading the lap.

Lap 190 -- Leaders to pit road:
• Greg Biffle gets changes and four tires
• Ryan Newman gets wedge and new tires
• Kyle Busch is good, just needing four tires
• Denny Hamlin gets a track-bar adjustment
• Jeff Gordon gains three positions on pit road

Lap 189 -- YELLOW FLAG NO. 5: Jamie McMurray spins around again after battling for position.

Lap 186 -- Pole-sitter Mark Martin is back in 14th position and working through a bulk of traffic.

Lap 179 -- Juan Montoya continues his solid run after a brief tangle with Jamie McMurray. Montoya is eighth.

Lap 169 -- Kyle Busch gets around Kevin Harvick to put him a lap down. He tells his crew that the two cars to watch are David Reutimann and Marcos Ambrose.

Lap 160 -- Jeff Gordon is on the move with the fastest car on the track in seventh place.

Lap 154 -- Kyle Busch has caught slow traffic once again and tries to work his way through.

Lap 150 -- Kyle Busch's lead is 2.587 seconds ahead of Jimmie Johnson.

Lap 144 -- Jamie McMurray slides into the wall again coming off Turn 4. He keeps going but is loose.

Lap 137 -- Jimmie Johnson fights back and takes second once again, passing Denny Hamlin. David Reutimann closes in behind.

Lap 131 -- Denny Hamlin makes a move on Jimmie Johnson to take second.

Lap 130 -- GREEN FLAG: Kyle Busch gets the race going again.
1. Kyle Busch
2. Jimmie Johnson
3. Denny Hamlin
4. David Reutimann
5. Marcos Ambrose

Lap 127 -- Juan Montoya is warned by NASCAR for aggressive driving.

Lap 126 -- LEAD CHANGE: Kyle Busch is the leader again after pit stops.

Lap 125 -- LEAD CHANGE: David Reutimann is scored as the leader due to his position on pit road.

Lap 124 -- Leaders head to pit road:
• Greg Biffle gets four tires and slight changes to loosen it
• Ryan Newman gets a track-bar adjustment and four tires
• Jimmie Johnson is tight and gets four tires
• Kyle Busch needs his car to turn in the center and gets changes
• Jamie McMurray misses his pit box

Lap 123 -- YELLOW FLAG NO. 4: Jamie McMurray spins coming off Turn 1 and has some cosmetic damage. He came down on Juan Montoya in Turn 4, then Montoya spun him in Turn 1. McMurray was in ninth.

Lap 120 -- Dale Earnhardt Jr. is running 18th and is slowly continuing to get through the field. He started at the back due to a transmission change.

Lap 115 -- Denny Hamlin has the fastest car on the track in fourth, although leader Kyle Busch is fighting through slower traffic.

Lap 110 -- A pack of slow cars is racing hard just ahead of leader Kyle Busch, fighting to keep from being lapped.

Lap 100 -- David Reutimann is now up to third position and chasing down leader Kyle Busch and second-place Jimmie Johnson.

Lap 93 -- Kevin Harvick's right-front fender is missing from earlier damage in Todd Bodine's spin. He runs in 31st.

Lap 90 -- Despite his injured ribs, Greg Biffle is running in fourth position.

Lap 87 -- David Reutimann is continuing his solid weekend and now runs in fifth position.

Lap 81 -- Denny Hamlin is working his way to the front and now sits in ninth.

Lap 77 -- Jeff Gordon is using the high line to get speed. He runs 14th.

Lap 70 -- LEAD CHANGE: Kyle Busch uses the outside line and passes Jimmie Johnson for the top spot.

Lap 68 -- GREEN FLAG: Jimmie Johnson leads the field to green.
1. Jimmie Johnson
2. Kyle Busch
3. Elliott Sadler
4. Mark Martin
5. Jamie McMurray

Lap 63 -- Leaders head to pit road, but Jimmie Johnson stays out again with nine other cars.
• Ryan Newman is "snug" and gets an air-pressure adjustment
• Kevin Harvick and Aric Almirola are caught speeding on exit
• Jeff Gordon gets four tires and fuel, slight chassis adjustment
• Sterling Marlin gets the free pass

Lap 61 -- Pit road is closed due to cleanup of the apron.

Lap 60 -- YELLOW FLAG NO. 3: Todd Bodine crashes hard coming off Turn 4. Michael Waltrip slides up into Bodine and smashes him into the wall as they came to the start/finish line. Kevin Harvick and Kurt Busch both get nose damage from the chain reaction.

Lap 55 -- Kasey Kahne makes it three-wide by going between Martin Truex Jr. and A.J. Allmendinger for 20th.

Lap 50 -- Matt Kenseth slaps the wall coming off Turn 4 and tells his crew the right tires may have been scrubbed. He says his car is getting tight.

Lap 46 -- Carl Edwards drops a spot to Kyle Busch, then another one to Mark Martin. He now runs fifth with Ryan Newman on his tail.

Lap 42 -- Kyle Busch passes Mark Martin to take fifth position.

Lap 39 -- GREEN FLAG: Jimmie Johnson gets the race back under way.
1. Jimmie Johnson
2. Marcos Ambrose
3. Elliott Sadler
4. Todd Bodine
5. Carl Edwards

Lap 34 -- There will be no free pass since John Andretti was involved in the caution.

Lap 33 -- YELLOW FLAG NO. 2: Second-place Dave Blaney spins around going into Turn 3 when the lapped car of John Andretti touches him after sliding up the hill.

Lap 33 -- GREEN FLAG: Jimmie Johnson leads the field to green with Mark Martin restarting eighth in the first car that pitted.
1. Jimmie Johnson
2. Dave Blaney
3. Marcos Ambrose
4. Todd Bodine
5. Elliott Sadler

Lap 29 -- LEAD CHANGE: Jimmie Johnson is the leader after staying out during pit stops.

Lap 28 -- Leaders head to pit road except for Jimmie Johnson and six other cars near the back:
• Kyle Busch gets two tires and fuel
• Mark Martin gets right-side tires only
• Jeff Gordon gets right-side tires like everyone else
• Sterling Marlin gets the free pass

Lap 27 -- YELLOW FLAG NO. 1: John Andretti spins in Turn 2 to bring out the caution.

Lap 24 -- Ryan Newman puts Sterling Marlin a lap down and starts to catch more slower traffic.

Lap 18 -- Reed Sorenson has fallen from his seventh-place starting spot back to 14th.

Lap 13 -- Jimmie Johnson moves up to second place after going below Mark Martin for the pass.

Lap 9 -- Jamie McMurray is working the high line. Halfway back, Michael Waltrip touches Todd Bodine as they race for 20th.

Lap 3 -- LEAD CHANGE: Ryan Newman moves around Mark Martin to take the lead early.

Lap 1 -- Mark Martin hangs on the lead the first lap.

2:16 p.m. -- GREEN FLAG: Mark Martin gets the Food City 500 under way from Bristol Motor Speedway.

2:15 p.m. -- Dale Earnhardt Jr. drops to the rear of the field for a transmission change.

2:12 p.m. -- Cars are rolling onto the track.

2:08 p.m. -- Virginia Tech football coach Frank Beamer delivers the command: "Gentlemen, start your engines!"

2:01 p.m. -- Ashton Shepherd sings the national anthem.

2 p.m. -- Rev. Mike Rife delivers the invocation.

1:30 p.m. ET -- Pre-race coverage of the Food City 500 is under way on FOX.