Lap-by-Lap: Dover

Lap 400 -- CHECKERED FLAG: Greg Biffle wins the Camping World RV 400 at Dover, his second consecutive victory.

Lap 399 -- WHITE FLAG: Greg Biffle has one more lap as he works through traffic.

Lap 397 -- Greg Biffle works through slow traffic and pulls away from his teammates.

Lap 393 -- Greg Biffle pulls away while teammates Matt Kenseth and Carl Edwards follow.

Lap 391 -- LEAD CHANGE: Greg Biffle moves to the outside, bumps with his teammate, then holds on to take the lead from Matt Kenseth.

Lap 390 -- Again, Greg Biffle pulls beside Matt Kenseth to challenge but backs off. Carl Edwards then pulls beside Biffle.

Lap 386 -- Greg Biffle pulls inside of Matt Kenseth, the two bump, but Biffle falls back to second.

Lap 385 -- Matt Kenseth continues to hold off Greg Biffle as they work through slower traffic.

Lap 380 -- Greg Biffle pulls to the bumper of Matt Kenseth to challenge for the lead. Carl Edwards' two tires prove to fade.

Lap 377 -- LEAD CHANGE: As Greg Biffle and Carl Edwards battle, Matt Kenseth dives below to take the lead.

Lap 376 -- Greg Biffle moves around Matt Kenseth for second, and slides behind leader Carl Edwards' bumper.

Lap 372 -- Carl Edwards leads, but Matt Kenseth is at his side as they come to the line. Greg Biffle closes in third.

Lap 370 -- Matt Kenseth pulls to the inside of Carl Edwards to challenge for the lead, but falls back.

Lap 364 -- Matt Kenseth has run down Carl Edwards and is pulling to his bumper to challenge for the lead.

Lap 362 -- Mark Martin loses third position to Greg Biffle.

Lap 358 -- Mark Martin wiggles and gets passed by Matt Kenseth for the second position.

Lap 356 -- GREEN FLAG: Carl Edwards leads the field to green.
1. Carl Edwards
2. Mark Martin
3. Greg Biffle
4. Matt Kenseth
5. Jimmie Johnson

Lap 354 -- David Reutimann is penalized one lap for pitting outside his box. He was running in the top 10.

Lap 351 -- Leaders head down pit road:
• Matt Kenseth gets a track-bar adjustment with new aie pressure
• Mark Martin gets no adjustments and four tires
• Carl Edwards gets just two tires and fuel and is out first
• Ryan Newman gains eight spots and comes out seventh

Lap 350 -- YELLOW FLAG NO. 10: Juan Montoya slams the wall and smashes up the right side of his car.

Lap 345 -- Matt Kenseth runs third, but says his car is too loose to compete for the victory.

Lap 343 -- Mark Martin trails leader Carl Edwards by 0.5 seconds.

Lap 333 -- Seven of the top eight drivers in the running order are Chase competitors.

Lap 328 -- Greg Biffle continues to battle a loose car and loses second position to Mark Martin.

Lap 321 -- LEAD CHANGE: Carl Edwards passes Greg Biffle as Biffle makes a little slip.

Lap 320 -- Michael Waltrip is having a solid run and is in 12th.

Lap 316 -- Mark Martin moves into third by passing Matt Kenseth.

Lap 312 -- Greg Biffle says on his radio that he could possibly have a flat. Second-place Carl Edwards is closing in.

Lap 310 -- Kurt Busch is getting black-flagged due to parts flying free from his car.

Lap 302 -- Matt Kenseth passes Jimmie Johnson to take third.

Lap 301 -- LEAD CHANGE: Greg Biffle takes the lead as three Roush Fenway cars attack Jimmie Johnson on both sides and from behind. Carl Edwards takes second, while Matt Kenseth is unable to make the pass.

Lap 300 -- Carl Edwards and Greg Biffle pull up to battle Jimmie Johnson for the lead with 100 laps to go.

Lap 298 -- GREEN FLAG: Jimmie Johnson gets the race going again.
1. Jimmie Johnson
2. Carl Edwards
3. Greg Biffle
4. Matt Kenseth
5. Mark Martin

Lap 292 -- Leaders head down pit road:
• Jimmie Johnson gets a track-bar adjustment and fuel to get free
• Carl Edwards is free and gets a wedge adjustment
• Greg Biffle gets his windshield clear again and four tires

Lap 291 -- YELLOW FLAG NO. 9: Debris is on the track in Turn 3.

Lap 287 -- Denny Hamlin is back on the racetrack after his rear-end problems.

Lap 281 -- Dave Blaney is making his pit gamble count and hanging inside the top 10. He runs in seventh.

Lap 277 -- Following green-flag pit stops, Jimmie Johnson leads by 3.940 seconds.
1. Jimmie Johnson
2. Carl Edwards
3. Matt Kenseth
4. Greg Biffle
5. Ryan Newman

Lap 270 -- LEAD CHANGE: Jimmie Johnson takes the lead once again when Clint Bowyer makes his stop. Teammate Jeff Burton is also on pit road.

Lap 269 -- LEAD CHANGE: Clint Bowyer is the new leader as Kevin Harvick pits for tires and adjustments.

Lap 268 -- LEAD CHANGE: Kevin Harvick is the new leader. Tony Stewart and Greg Biffle are on pit road. Stewart gets four tires. Biffle's concern is with his windshield and the oil that was on it.

Lap 267 -- LEAD CHANGE: Greg Biffle becomes the new leader. Carl Edwards and Matt Kenseth are on pit road. Kenseth gets a chassis adjustment and four tires. Edwards gets no adjustments.

Lap 265 -- Martin Truex Jr. is in for four tires and minor changes.

Lap 263 -- Jeff Gordon is in for his pit stop and gets a wedge adjustment as he battles a tight car.

Lap 255 -- Denny Hamlin's crew is replacing both axles and the driveshaft as Hamlin sits in his car in its garage stall.

Lap 253 -- Greg Biffle passes teammate Matt Kenseth to take second place.

Lap 251 -- Juan Montoya is on pit road for his scheduled stop. He gets a chassis adjustment and four tires. Brian Vickers is also on pit road with a clean stop and four tires.

Lap 250 -- Regan Smith heads to the garage area with problems.

Lap 249 -- Bobby Labonte and A.J. Allmendinger are on pit road for their scheduled stops.

Lap 247 -- Roush Fenway Racing cars hold the top three positions: 1. Carl Edwards, 2. Matt Kenseth, 3. Greg Biffle.

Lap 243 -- Denny Hamlin heads to the garage area. His car has no power.

Lap 242 -- Denny Hamlin is slow with a flat right-rear tire. He heads to pit road, along with fifth-place Dave Blaney. Blaney gets no adjustments and four tires.

Lap 239 -- LEAD CHANGE: Carl Edwards takes the top spot as Jimmie Johnson peels off to pit road for his scheduled stop. He gets four tires and a wedge adjustment in 13.3 seconds.

Lap 236 -- Second-place Ryan Newman hits pit road to get fuel and four tires. He is tight and gets a wedge adjustment.

Lap 234 -- Carl Edwards passes Jeff Gordon to take third position.

Lap 225 -- Leader Jimmie Johnson plans to pit in the next 10 laps after gambling that a caution would allow him to get back on the regular pit cycle.

Lap 220 -- Denny Hamlin is running in 10th, but his oil leak continues. Greg Biffle, who just passed Hamlin, said he got oil on his windshield from the No. 11 car.

Lap 217 -- Carl Edwards has worked his way up to seventh on two fresh tires.

Lap 209 -- Kyle Busch's crew continues to work on his car, hopeful to get the driver back on the track.

Lap 200 -- Jimmie Johnson leads Ryan Newman by 1.147 seconds at the race's halfway mark.

Lap 199 -- Three Chase drivers are running in the top 10: Jimmie Johnson (first), Jeff Gordon (fourth) and Denny Hamlin (eighth).

Lap 190 -- GREEN FLAG: Jimmie Johnson gets the race going again as the top 11 cars did not pit.
1. Jimmie Johnson
2. Ryan Newman
3. Dave Blaney
4. A.J. Allmendinger
5. Juan Montoya

Lap 188 -- LEAD CHANGE: Jimmie Johnson becomes the new leader by staying on the track.

Lap 187 -- Leaders head down pit road, with Jimmie Johnson staying out:
• Kevin Harvick gets fuel and no changes, four tires
• Matt Kenseth also asks for no changes on his car
• Carl Edwards gets right-side tires only
• Greg Biffle's crew makes an air-pressure adjustment

Lap 186 -- Pit road is closed.

Lap 185 -- YELLOW FLAG NO. 8: Sam Hornish Jr. spins and goes to bottom of the track, making contact with the wall.

Lap 178 -- GREEN FLAG: Matt Kenseth leads the field to green.
1. Matt Kenseth
2. Carl Edwards
3. Mark Martin
4. Greg Biffle
5. Clint Bowyer

Lap 173 -- Denny Hamlin is back on pit road due to a rear-end issue where oil is leaking.

Lap 172 -- Kyle Busch's day is over. His engine finally blew up, and his crew pushes the car to the garage.

Lap 171 -- A handful of lead-lap cars head down pit road, including seventh-place David Reutimann, who barely avoided the Sam Hornish Jr. accident. Denny Hamlin and Jeff Gordon are also on pit road.

Lap 170 -- YELLOW FLAG NO. 7: Sam Hornish Jr. loses a bumper from contact in Turn 4, then loses control heading into Turn 1. He brushes the wall and has rear damage.

Lap 167 -- Jamie McMurray is taking his car to the garage.

Lap 166 -- GREEN FLAG: Matt Kenseth gets the race going again.
1. Matt Kenseth
2. Carl Edwards
3. Mark Martin
4. Jeff Gordon
5. Greg Biffle

Lap 164 -- Kyle Busch's crew chief Steve Addington says his driver will run the car until it quits. It is still smoking and believed to have a broken valve. He runs in 22nd.

Lap 162 -- Jamie McMurray is on pit road as his crew tries to repair the damage.

Lap 161 -- YELLOW FLAG NO. 6: Jamie McMurray and Robby Gordon make contact and go spinning. McMurray has major right-side damage. Gordon, a lap down, got loose, forcing McMurray high and into the wall.

Lap 160 -- GREEN FLAG: Matt Kenseth gets the race back under way.
1. Matt Kenseth
2. Carl Edwards
3. Mark Martin
4. Jeff Gordon
5. Greg Biffle

Lap 157 -- Leaders stay out, but some cars near the back dive onto pit road to make some adjustments.

Lap 156 -- YELLOW FLAG NO. 5: A.J. Allmendinger makes contact with Kasey Kahne. Allmendinger has some left-rear fender damage.

Lap 150 -- Dale Earnhardt Jr. is one lap down in 36th position after his cut tire.

Lap 148 -- GREEN FLAG: Matt Kenseth gets the race going again.
1. Matt Kenseth
2. Carl Edwards
3. Mark Martin
4. Jeff Gordon
5. Greg Biffle

Lap 146 -- Kyle Busch's car continues to smoke. He was in 11th but drops to the back of the pack to avoid any problems. He says oil is in the cockpit.

Lap 143 -- Leaders head down pit road:
• Matt Kenseth needs grip and gets a track-bar adjustment
• Mark Martin gets four tires and no adjustments
• Jamie McMurray gets minor adjustments and tires
• Kyle Busch gets changes and tires but the crew doesn't check the motor

Lap 141 -- YELLOW FLAG NO. 4: Dale Earnhardt Jr. spins from a blown right-rear tire. The tire explodes, causing damage to the fender.

Lap 141 -- Kyle Busch's car begins smoking as he tells his crew it is blowing up.

Lap 135 -- Dale Earnhardt Jr. is running in 22nd, but is just one car from going a lap down.

Lap 130 -- Greg Biffle is up to sixth position and likes his racecar.

Lap 122 -- Matt Kenseth leads Jamie McMurray, who got back around Mark Martin once they cleared Robby Gordon, by 0.946 seconds.

Lap 116 -- Mark Martin slips below Jamie McMurray for second as the two try to move around the lapped car of Robby Gordon.

Lap 110 -- Jamie McMurray is starting to close in on leader Matt Kenseth as the two work through slower traffic.

Lap 103 -- Dale Earnhardt Jr. says his car is loose and experiencing chatter. He's fallen back to 25th.

Lap 99 -- Greg Biffle passes Jimmie Johnson to take seventh position and continues to have a fast machine.

Lap 95 -- After starting 21st, Jeff Burton has settled in 12th position.

Lap 85 -- Mark Martin and Carl Edwards both go by Jeff Gordon for third and fourth, respectively.

Lap 83 -- Jamie McMurray moves around Jeff Gordon to take second place.

Lap 79 -- Dale Earnhardt Jr. continues to try to get a handle on his machine, running in 20th just behind A.J. Allmendinger.

Lap 75 -- After the speeding penalty, Denny Hamlin is running in 27th.

Lap 70 -- Marcos Ambrose brushes the wall but continues without issue.

Lap 69 -- GREEN FLAG: Matt Kenseth gets the race back under way.
1. Matt Kenseth
2. Mark Martin
3. Jeff Gordon
4. Jamie McMurray
5. Carl Edwards

Lap 67 -- Denny Hamlin and Elliott Sadler get penalized for speeding off pit road. Both will restart at the tail of the longest line.

Lap 66 -- LEAD CHANGE: Matt Kenseth gets the lead by winning the race off pit road.

Lap 65 -- Leaders head to pit road:
• Matt Kenseth is loose and gets a wedge adjustment, among other changes
• Mark Martin gets four tires and fuel with no adjustments
• Jamie McMurray makes minor air-pressure adjustments

Lap 64 -- YELLOW FLAG NO. 3: Joe Nemechek blows a right-front tire. He heads to pit road as the tire rips apart his fender.

Lap 60 -- Dale Earnhardt Jr. has lost some of the handle on his car, falling back to 16th position.

Lap 53 -- Greg Biffle restarted in 27th on Lap 17 after an early pit stop, but now he is up to 13th after passing Ryan Newman.

Lap 50 -- Jimmie Johnson is now in ninth, his highest position of the day after starting 20th.

Lap 43 -- Tony Stewart is the lowest Chase driver in the running order at 21st.

Lap 38 -- After his Lap 2 crash, Kurt Busch has battled back and is now on the lead lap in 26th place.

Lap 36 -- Eight of the top 11 drivers are Chase competitors. The others: Jamie McMurray (first), Mark Martin (fourth) and David Reutimann (sixth).

Lap 30 -- LEAD CHANGE: Jamie McMurray keeps moving up and drives to the outside of Jeff Gordon for the top spot.

Lap 24 -- Jamie McMurray takes second from Denny Hamlin and sets his sights on leader Jeff Gordon.

Lap 23 -- Jamie McMurray moves below Matt Kenseth to take third place.

Lap 20 -- The two points leaders, Jimmie Johnson and Carl Edwards, are running 12th and 13th, respectively.

Lap 16 -- GREEN FLAG: Jeff Gordon gets the race going again.
1. Jeff Gordon
2. Denny Hamlin
3. Matt Kenseth
4. Jamie McMurray
5. Mark Martin

Lap 12 -- Greg Biffle is on pit road for four tires and fuel. Biffle gets an air-pressure adjustment and a major wedge adjustment. He tells his crew, "I can't even drive it." Tony Stewart is among the 17 who make pit stops.

Lap 11 -- YELLOW FLAG NO. 2: Patrick Carpentier spins down the backstretch in front of Carl Edwards. Carpentier rests against the inside wall. Edwards made slight contact with Carpentier, but decides not to pit.

Lap 10 -- After starting 13th, Tony Raines has moved up to 10th with a good early run.

Lap 6 -- GREEN FLAG: Jeff Gordon gets the race back under way.
1. Jeff Gordon
2. Denny Hamlin
3. Greg Biffle
4. Mark Martin
5. Matt Kenseth

Lap 3 -- Kurt Busch is on pit road as his crew attempts to make repairs to the deck lid.

Lap 2 -- YELLOW FLAG NO. 1: Kurt Busch goes spinning in Turn 2 and backs into the wall. David Gilliland got loose and slid up the track, clipping Busch. As cars slow to avoid the crash, Paul Menard spins around but makes no contact.

Lap 1 -- Jeff Gordon pulls away to lead the first lap.

2:17 p.m. -- GREEN FLAG: Jeff Gordon and Mark Martin get the Camping World RV 400 under way.

2:12 p.m. -- Cars are rolling onto the concrete banking at Dover International Speedway.

2:08 p.m. -- Marcus Lemonis, chairman and CEO of Camping World, delivers the command: "Gentlemen, start your engines!"

2:02 p.m. -- Kate and Kacey Coppola sing the national anthem.

2:01 p.m. -- Rev. Dan Schafer delivers the invocation.

1 p.m. ET -- ABC's pre-race coverage of the Camping World RV 400 is under way from Dover.

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