Lap-by-Lap: Dover

Lap 400 -- CHECKERED FLAG: Kyle Busch wins at Dover, sweeping the Nationwide and Cup series races for his 18th career Cup victory. Jeff Burton was second, Matt Kenseth third.

Lap 399 -- WHITE FLAG: Kyle Busch takes the white flag.

Lap 395 -- Kyle Busch's lead is nearly 7 seconds with five laps to go.

Lap 393 -- Jeff Gordon is sitting 11th, less than a second behind Joey Logano for a spot in the top 10.

Lap 391 -- Jeff Burton is 5.3 seconds behind Kyle Busch, and will now need a Busch mistake to pull out the victory.

Lap 389 -- Kyle Busch's lead is at 5.2 seconds.

Lap 387 -- The rest of the top 10 cars are pretty well spaced out, so the only drama in that range is if Jeff Burton can catch Kyle Busch for the victory. Lead is currently at 4.8 seconds.

Lap 384 -- Kyle Busch holds the lead, and Jeff Burton might not have enough time to catch him ... only 16 laps remaining.

Lap 380 -- Jeff Burton gets around Matt Kenseth, but is still 5 seconds behind Kyle Busch. However, Burton is running slightly faster than Busch right now.

Lap 377 -- Jeff Burton is closing on Matt Kenseth for the right to drive in Kyle Busch's fumes in second.

Lap 374 -- Kyle Busch has a 5-second lead. Juan Montoya is out of the race with a bad sway bar.

Lap 372 -- Jeff Burton gets around Denny Hamlin for third.

Lap 367 -- LEAD CHANGE: Kyle Busch regains the lead after green flag pit stops cycle through.
1. Kyle Busch
2. Matt Kenseth
3. Denny Hamlin
4. Jeff Burton
5. David Reutimann

Jimmie Johnson is now a lap down.

Lap 366 -- Jimmie Johnson flagged for exiting too fast, and has to do a drive-through penalty. That is HUGE.

Lap 365 -- LEAD CHANGE: Martin Truex Jr. takes the lead when David Reutimann pits.

Lap 364 -- LEAD CHANGE: David Reutimann takes the lead when Jimmie Johnson and Kyle Busch pit under green.

Lap 363 -- Carl Edwards stops a few laps earlier than planned and takes four.

Lap 361 -- Denny Hamlin and Tony Stewart start the green flag pit stops. Stewart pleased with his car, gets a chassis adjustment and four tires. Hamlin takes four tires.

Lap 360 -- David Reutimann finally gets around Jeff Burton for fourth.

Lap 355 -- LEAD CHANGE: And now it's Jimmie Johnson back to the lead.

Lap 354 -- LEAD CHANGE: Kyle Busch takes the lead back.

Lap 353 -- LEAD CHANGE: Jimmie Johnson flew past Kyle Busch for the lead. Guess he had a little more to get from his car.

Lap 352 -- Juan Montoya heads back to the garage.

Lap 351 -- Points leader Kevin Harvick is still sitting seventh, a whopping 23-spot improvement for him over the course of the race.

Lap 349 -- Kyle Busch has opened up a nearly half-second lead on Jimmie Johnson, which doesn't sound like much, but is a larger gap than he's had in some time.

Lap 345 -- Sam Hornish Jr. is flagged for going too fast on pit road and will have to serve a pass-through penalty.

Lap 342 -- Kyle Busch and Jimmie Johnson have led 300 of the 341 completed laps.

Lap 337 -- Clint Bowyer is now the final car on the lead lap.

Lap 334 -- As green flag stops approach, Jimmie Johnson continues to stalk leader Kyle Busch.

Lap 327 -- Jeff Gordon is sitting 13th, between Joey Logano and Ryan Newman, and Juan Montoya has returned to the track.

Lap 317 -- Carl Edwards is up to eighth.

Lap 309 -- There are 18 cars on the lead lap, as Kurt Busch is the final car ahead of his brother, Kyle Busch, who's leading the race.

Lap 305 -- Matt Kenseth has dropped back from Jimmie Johnson but is still sitting third, and Jamie McMurray has returned to the track after extensive repairs in the garage.

Lap 301 -- Carl Edwards just reported his best lap of the day and he's in ninth.

Lap 300 -- Martin Truex Jr. is up to eighth.

Lap 297 -- Greg Biffle and Jeff Gordon tangle in a battle for 10th.

Lap 292 -- LEAD CHANGE: Kyle Busch gets around Jimmie Johnson for the lead, and Matt Kenseth is on Johnson's tail for second.

Lap 291 -- GREEN FLAG: Jimmie Johnson once again is in front of the rest of the field.
1. Jimmie Johnson
2. Kyle Busch
3. Matt Kenseth
4. Jeff Burton
5. David Reutimann

Clint Bowyer is moved to the rear of the field for "moving equipment," and Kurt Busch is sent back for pitting early.

Lap 289 -- A.J. Allmendinger is flagged for exiting pit road too quickly.

Lap 288 -- Lead lap cars hit pit road.

• Clint Bowyer is pulling his jack on the apron after contact with several cars on the pit stop
• Jimmie Johnson took four tires
• Kyle Busch took four tires
• Matt Kenseth took four tires

Lap 287 -- YELLOW FLAG NO. 5: Kurt Busch goes into the wall hard in Turn 4 after brushing it in Turn 2. He had a right-front tire blow out, and there's severe damage to his right-front quarter panel.

Lap 284 -- Carl Edwards is up to 10th, and A.J. Allmendinger climbs to 12th.

Lap 279 -- Marcos Ambrose is out of the race after hitting the wall twice in essentially the same spot.

Lap 277 -- A.J. Allmendinger continues to climb his way back into the mix, back up to 13th after originally being two laps down.

Lap 276 -- Clint Bowyer is up to fifth, with Denny Hamlin behind him.

Lap 273 -- Kyle Busch passes Matt Kenseth for second, but is still more than two seconds behind Jimmie Johnson.

Lap 267 -- Kurt Busch has fallen to ninth now, behind Jimmie Johnson, Matt Kenseth, Kyle Busch, Jeff Burton, Clint Bowyer, Denny Hamlin, David Reutimann and Kevin Harvick.

Lap 265 -- They're pushing Jamie McMurray to the pits as well as he reports his suspension is busted.

Lap 263 -- Juan Montoya heads to the garage as his teammate, Jamie McMurray, hits pit road with a flat left-rear tire.

Lap 261 -- LEAD CHANGE: Jimmie Johnson takes the lead from Matt Kenseth.

Lap 259 -- Clint Bowyer gets around Kurt Busch for fifth, and Juan Montoya hits pit road, putting him three laps down in a disappointing run for him.

Lap 258 -- Jeff Burton takes fourth, Kurt Busch is fifth, and Bowyer and Hamlin keep battling for sixth.

Lap 256 -- Denny Hamlin has joined the party in the battle for fourth, and got Clint Bowyer a little loose in the crowd. A little payback from the Nationwide race, perhaps?

Lap 254 -- Jeff Burton is battling Kurt Busch for fourth, with Clint Bowyer right behind them.

Lap 251 -- Three-wide for second into Turn 3, and Jimmie Johnson comes out the victor.

Lap 250 -- GREEN FLAG: Matt Kenseth leads the field back to green.
1. Matt Kenseth
2. Kurt Busch
3. Kyle Busch
4. Jimmie Johnson
5. Denny Hamlin

Lap 248 -- Greg Biffle is penalized for being too fast exiting.

Lap 247 -- LEAD CHANGE: Matt Kenseth stays out, taking over the lead from Jimmie Johnson.

Lap 247 -- Lead-lap cars hit pit road, with most taking two tires.

Lap 245 -- YELLOW FLAG NO. 4: Sam Hornish Jr. brings out a caution after spinning out coming out of Turn 4. Ryan Newman gets the free pass.

Lap 244 -- Carl Edwards, who was penalized earlier in the race, is 14th behind Jeff Gordon.

Lap 240 -- Denny Hamlin moves to the inside of Greg Biffle, getting the No. 16 loose and putting Hamlin fifth in the race.

Lap 238 -- Martin Truex Jr. has quietly moved back into the top 10, in seventh.

Lap 236 -- LEAD CHANGE: Jimmie Johnson takes the lead back, continuing the duel but opening the door for Jeff Burton to close the gap in third.

Lap 234 -- LEAD CHANGE: Kyle Busch passes Jimmie Johnson to the outside.

Lap 233 -- Greg Biffle is up to fifth.

Lap 231 -- Jeff Burton struggles on the restart and was left behind on the inside line, and is now well behind the two-car battle between Jimmie Johnson and Kyle Busch for the lead.

Lap 231 -- GREEN FLAG: Jimmie Johnson is still in the lead as they take the flag.
1. Jimmie Johnson
2. Jeff Burton
3. Kyle Busch
4. David Reutimann
5. Kevin Harvick

Lap 226 -- Pit road is open, and several lead-lap cars have come in.
• Jimmie Johnson gets four tires and no adjustments
• Jeff Burton takes four tires
• David Reutimann takes four
• Kyle Busch takes four
• Denny Hamlin takes four
• Kevin Harvick takes four
• Matt Kenseth takes four this time

Lap 225 -- YELLOW FLAG NO. 3: Marcos Ambrose blows another right-front tire and goes into the wall in Turns 3 and 4, a near repeat of the previous caution. A.J. Allmendinger gets the free pass.

Lap 222 -- Jimmie Johnson says he has no complaints, but he's running as hard as he can, and he's surprised other cars are able to keep up with him.

Lap 219 -- All three JGR cars are in the top nine (Kyle Busch fourth, Denny Hamlin sixth, Joey Logano ninth) and all three Richard Childress Racing cars are in the top eight (Jeff Burton second, Kevin Harvick fifth, Clint Bowyer eighth).

Lap 217 -- Tony Stewart is now the last car on the lead lap, in 16th.

Lap 213 -- Kevin Harvick takes over fifth from Matt Kenseth.

Lap 209 -- Kevin Harvick is closing in on Matt Kenseth for fifth after Kenseth took two tires on the most recent pit stop.

Lap 207 -- Dale Earnhardt Jr. is seven laps down.

Lap 205 -- Martin Truex (started first) is down to 15th, and third-place starter Mark Martin is running 20th.

Lap 200 -- They're halfway home as David Reutimann passes Kyle Busch for third place.

Lap 199 -- Denny Hamlin is up to eighth, just behind teammate Joey Logano.

Lap 194 -- A.J. Allmendinger is successful after a tough battle with Ryan Newman in becoming the first car one lap down, setting him up for the free pass on the next caution.

Lap 192 -- Jeff Burton has passed Kyle Busch and is now second only to Jimmie Johnson, but he's still 1.6 seconds off the lead.

Lap 190 -- Matt Kenseth and David Reutimann both get around Joey Logano to climb into the top five.

Lap 185 -- There are 16 cars on the lead lap, as Ryan Newman is the first car one lap down.

Lap 183 -- Jeff Burton works his way around Joey Logano to move into third, behind Kyle Busch.

Lap 181 -- Kevin Harvick continues to climb, getting lucky when the previous caution came out when he was in danger of being lapped, and he's now up to eighth.

Lap 180 -- Juan Montoya and Mark Martin make a little contact.

Lap 176 -- LEAD CHANGE: Jimmie Johnson passes Kyle Busch for the lead, and Busch isn't giving up easily.

Lap 175 -- Denny Hamlin passes Kurt Busch for 12th.

Lap 171 -- LEAD CHANGE: Kyle Busch passes Jimmie Johnson for the lead.

Lap 170 -- GREEN FLAG: The race restarts after Carl Edwards was sent to the rear of the field for passing the pace car under caution.
1. Jimmie Johnson
2. Kyle Busch
3. Joey Logano
4. Jeff Burton
5. Matt Kenseth

Lap 167 -- Lead-lap cars hit pit road.
• Jimmie Johnson took four tires
• Kyle Busch took four tires as well
• Matt Kenseth moves up by taking only two tires
• Joey Logano (fourth) and Tony Stewart (fifth) each took four tires

Lap 166 -- A.J. Allmendinger dropped from third to 28th with the pit stop, and is now two laps down.

Lap 165 -- YELLOW FLAG NO. 2: Marcos Ambrose goes into the wall between Turns 3 and 4, bringing out the caution. A.J. Allmendinger had just pitted for four tires and fuel, and was caught on pit road.

Lap 164 -- Kevin Harvick has moved up to 15th after starting 30th.

Lap 159 -- Jimmie Johnson leads second-place Kyle Busch by 5.5 seconds.

Lap 157 -- J.J. Yeley (engine) is officially out.

Lap 153 -- Some shuffling in the top 10, as Nos. 6-10 now go Jamie McMurray, Jeff Burton, Kurt Busch, Jeff Gordon and Greg Biffle.

Lap 148 -- Replays show A.J. Allmendinger had a 21.2-second pit stop on his green flag stop after his right rear tire had a loose lug nut, which is what has put him so far off the lead.

Lap 147 -- Greg Biffle is up to seventh, picking up 17 spots since the start of the race.

Lap 143 -- J.J. Yeley takes his car to the garage.

Lap 141 -- Jimmie Johnson holds a commanding lead of nearly 3.5 seconds over Kyle Busch, then it's another 4.5 seconds back to A.J. Allmendinger.

Lap 137 -- LEAD CHANGE: Jimmie Johnson regains the lead after green flag pit stops.

1. Jimmie Johnson
2. Kyle Busch
3. A.J. Allmendinger
4. Joey Logano
5. Tony Stewart

Lap 136 -- Robby Gordon gets a pass-through penalty for a commitment line violation.

Lap 136 -- LEAD CHANGE: Jeff Burton passes Kurt Busch for the lead.

Lap 135 -- LEAD CHANGE: Jimmie Johnson pits, giving the lead to Kurt Busch.

Lap 134 -- Martin Truex Jr., Clint Bowyer and Joey Logano among those on pit road under green.

Lap 133 -- Kyle Busch, Denny Hamlin, Kasey Kahne, Mark Martin and Ryan Newman are among those on pit road.

Lap 131 -- The second-place car of A.J. Allmendinger as well as Matt Kenseth are both on pit road under green.

Lap 130 -- The lapped car of Juan Montoya hits pit road. He says his car hasn't had much grip, and he takes four tires. Elliott Sadler also pits for four tires.

Lap 128 -- Jimmie Johnson and A.J. Allmendinger are in their own universe right now, as third-place Kyle Busch is nearly 7 seconds off the lead.

Lap 125 -- Dale Earnhardt Jr. is on pit road for a green flag stop, aiming for a track bar adjustment.

Lap 124 -- Tony Stewart is up to fourth, and Joey Logano is up to fifth.

Lap 122 -- Jeff Burton is in the top 10. Martin Truex Jr. is back up to 11th.

Lap 119 -- They've gone more than 60 laps since the last yellow, meaning green flag pit stops are on the horizon.

Lap 114 -- Never mind, Kyle Busch's radio just came unplugged from his helmet. Crisis averted. He's running third, but is more than 5 seconds off the lead.

Lap 111 -- A.J. Allmendinger got around the lapped car of Casey Mears, who is filling in for Brian Vickers, and now has a straight shot at Jimmie Johnson.

Lap 109 -- Jimmie Johnson is stretching his lead back out, seemingly toying with A.J. Allmendinger.

Lap 108 -- Greg Biffle and Jeff Burton both pass Martin Truex Jr., putting Biffle 10th and Burton 11th.

Lap 104 -- A.J. Allmendinger is less than two-tenths of a second behind leader Jimmie Johnson.

Lap 103 -- Martin Truex Jr. is down to 10th, and he's got Greg Biffle, Jeff Burton and Mark Martin breathing down his neck.

Lap 98 -- Jeff Burton (13th) climbs into the top 15 for the first time today.

Lap 96 -- Kyle Busch has lost the ability to hear his crew chief and spotter on his radio, but they can still hear him. So he's trying to communicate and hope they can fix the car without him getting any feedback from them.

Lap 95 -- Jeff Gordon is up to eighth, closing in on Clint Bowyer.

Lap 93 -- Bobby Labonte (electrical) and Joe Nemechek (brakes) are both out of the race.

Lap 92 -- A.J. Allmendinger is less than a second behind Jimmie Johnson for the lead.

Lap 90 -- Joey Logano moves into the top 10, passing Mark Martin for the spot.

Lap 89 -- Clint Bowyer is dropping further, this time passed by Kurt Busch for sixth.

Lap 88 -- Pole-sitter Martin Truex Jr. is still hanging around, running eighth.

Lap 86 -- Tony Stewart moves into the top 5 with a pass of Clint Bowyer. Also, A.J. Allmendinger moves into second, passing Kyle Busch.

Lap 85 -- LEAD CHANGE: Jimmie Johnson goes outside past Kyle Busch, regaining the lead.

Lap 82 -- Jamie McMurray has passed Clint Bowyer for fourth place.

Lap 80 -- Jimmie Johnson is really closing on Kyle Busch, and A.J. Allmendinger isn't fading in third.

Lap 78 -- Speaking of Joey Logano, he's up to 12th now, having passed David Reutimann as well. He started 18th.

Lap 77 -- Greg Biffle is up to 14th after starting 24th. He was running 13th, but was passed by Joey Logano on the previous lap.

Lap 74 -- A.J. Allmendinger takes over third place from Clint Bowyer. He started eighth.

Lap 71 -- After being sent to the rear for his pit-road penalty, Kasey Kahne is still having trouble with his shifter.

Lap 69 -- Bobby Labonte drives his car to the garage.

Lap 66 -- Jeff Gordon has climbed up to 11th, and is now right behind teammate Mark Martin for a spot in the top 10.

Lap 63 -- A.J. Allmendinger passes Kurt Busch for fourth place; Tony Stewart is up to sixth.

Lap 60 -- LEAD CHANGE: Kyle Busch passes Jimmie Johnson for the lead.

Lap 59 -- GREEN FLAG: Jimmie Johnson leads the field to green.

Lap 58 -- David Ragan is sent to the rear of the field on the restart, too fast exiting pit road. Kasey Kahne is also sent to the rear for sending too many men over the wall.

Lap 56 -- The lead-lap cars head to pit road.

• Jimmie Johnson takes four tires
• Kyle Busch takes four tires
• Clint Bowyer takes four tires
• Martin Truex Jr. takes four tires
• Kurt Busch takes four tires

Lap 54 -- YELLOW FLAG NO. 1: Sam Hornish Jr. hits the wall in Turn 1, bringing out the first caution. There is no free pass.

Lap 53 -- Jeff Gordon is not pleased with his car, though he's running 14th.

Lap 52 -- Kasey Kahne is really moving, cutting Johnson's lead in half. He's just over a half-second out of the lead right now.

Lap 50 -- Michael McDowell, Dave Blaney and Mike Bliss are officially out of the race.

Lap 48 -- Jimmie Johnson and Kasey Kahne have really checked out. Johnson leads Kahne by only 1.4 seconds, but the third-place car of Clint Bowyer is 4.5 seconds back.

Lap 45 -- Kurt Busch is up to seventh after starting 12th, and Tony Stewart is up seven spots to ninth.

Lap 44 -- Dave Blaney heads to the garage, but the 87 of Joe Nemechek heads back out to the track.

Lap 42 -- Jimmie Johnson's lead on Kasey Kahne has grown to two seconds.

Lap 41 -- Mike Bliss joins the parade to the garage.

Lap 40 -- Johnny Sauter is officially out of the race. The reason from the garage was electrical.

Lap 39 -- Jimmie Johnson has opened up a 1.5-second lead on Kasey Kahne.

Lap 38 -- Michael McDowell also heads to the garage.

Lap 37 -- Clint Bowyer passes pole-sitter Martin Truex Jr. for fourth.

Lap 36 -- Joe Nemecheck follows, also pulling his car to the garage.

Lap 33 -- Johnny Sauter takes his car to the garage.

Lap 32 -- Tony Stewart passes Jamie McMurray to crack the top 10.

Lap 30 -- Ryan Newman continues to slide, falling down to 13th now between David Reutimann and Denny Hamlin.

Lap 28 -- Tony Stewart is charging toward the top 10, climbing to 11th from his 16th-place starting spot.

Lap 26 -- LEAD CHANGE: Jimmie Johnson passes Kasey Kahne for the lead. Johnson won both races at Dover last year.

Lap 25 -- Jimmie Johnson goes outside of Kasey Kahne to try to make a pass.

Lap 23 -- Kurt Busch is up to ninth after starting 12th.

Lap 19 -- Jimmie Johnson is slowly closing in on Kasey Kahne, as the lead is now down to less than a second.

Lap 17 -- Jimmie Johnson passes his ex-teammate, Kyle Busch, to take second behind Kasey Kahne.

Lap 15 -- Ryan Newman is struggling, dropping from a sixth-place start to 10th.

Lap 13 -- A.J. Allmendinger and Jamie McMurray continue to battle for 9th.

Lap 10 -- Kasey Kahne has opened up a lead of nearly a full second on Kyle Busch.

Lap 8 -- Mark Martin is down two spots, dropping to fifth after starting third.

Lap 5 -- David Reutimann is up two spots to 11th.

Lap 3 -- Kyle Busch has also passed Martin Truex Jr., moving into second behind Kasey Kahne.

Lap 1 -- LEAD CHANGE: Kasey Kahne leads the first lap, passing Martin Truex Jr..

1:17 p.m. -- GREEN FLAG: Martin Truex Jr. leads the field to speed for 400 laps at the Monster Mile.

1:14 p.m. -- Regan Smith moves to the back for the start for transmission. He qualified 37th.

1:14 p.m. -- The cars roll off pit road for their warm-up laps.

1:10 p.m. -- Richard Petty, part of the inaugural class at the NASCAR Hall of Fame, gives the command to start engines.

1:03 p.m. -- Country music artist Joe Nichols performs the national anthem.

1:02 p.m. -- Reverend Jonathan Falwell of Thomas Road Baptist Church in Lynchburg, Va., delivers the Invocation.

12 p.m. -- FOX's pre-race coverage of the Autism Speaks 400 is under way.

11:39 a.m. -- It's a cloudy day at Dover International Speedway, overcast and cool, but rain shouldn't be a problem for the Autism Speaks 400. It should be around 68 degrees by the time the green flag falls, and should hover around 70 throughout the race. Martin Truex Jr. will lead the field to green, winning the pole at the site of his lone Cup Series victory. Green flag is set for 1:15 p.m. ET.