Lap-by-Lap: Texas

Lap 339 -- CHECKERED FLAG: Carl Edwards wins the Samsung 500 at Texas.

Lap 338 -- WHITE FLAG: Carl Edwards is running away from Jimmie Johnson, but Clint Bowyer gets shuffled back as the cars come off Turn 4.

Lap 337 -- Clint Bowyer shoots to the inside and passes three cars to take third.

Lap 337 -- GREEN FLAG: Carl Edwards leads the field to the green-white-checkered restart as the top five cars are on old tires.
1. Carl Edwards
2. Jimmie Johnson
3. Kyle Busch
4. Denny Hamlin
5. Matt Kenseth

Lap 332 -- There are 10 lead-lap cars heading for the final restart, five of which have fresh tires and five of which have old tires.

Lap 331 -- Leader Carl Edwards stays out, as do the top five cars:
• Tony Stewart stops for right-side tires
• Mark Martin gets four tires and a splash
• Jeff Burton gets four tires
• Ryan Newman gets two tires

Lap 330 -- YELLOW FLAG NO. 6: Martin Truex Jr. blows up and drops to the bottom of the track with four laps to go.

Lap 329 -- Carl Edwards rolls with a 1.404-second lead on Jimmie Johnson. Kyle Busch is third, a distant 7.513 seconds behind Johnson.

Lap 325 -- Carl Edwards leads by 1.729 seconds with 10 laps to go.

Lap 321 -- Tony Stewart on his radio: "It's blowing up." Stewart runs in sixth.

Lap 319 -- Jimmie Johnson is loose while trying to chase down leader Carl Edwards. His car whips around as he exits the corners, but he's chipping at Edwards' lead.

Lap 314 -- Martin Truex Jr.'s car is smoking and he's dropping speed. He's sixth as his crew thinks he may have dropped a valve spring.

Lap 310 -- Matt Kenseth cracks the top five by passing Martin Truex Jr. for fifth.

Lap 305 -- Jimmie Johnson and leader Carl Edwards continue to swap roles as the fastest driver on the track. Edwards leads Johnson by 1.366 seconds.

Lap 301 -- Jimmie Johnson moves by Kyle Busch after a daring three-wide attempt at the position a lap earlier.

Lap 298 -- GREEN FLAG: Carl Edwards gets the race going once more.
1. Carl Edwards
2. Kyle Busch
3. Jimmie Johnson
4. Martin Truex Jr.
5. Denny Hamlin

Lap 295 -- The leaders hit pit road:
• Kyle Busch gets tires, air in the front and a chassis adjustment
• Clint Bowyer seeks a tight car with air in the tires
• Carl Edwards pits after debating staying out
• Martin Truex Jr. gains four spots with two right tires
• Jimmie Johnson drops a spot to Kyle Busch on pit road

Lap 294 -- YELLOW FLAG NO. 5: Debris is on the back straightaway.

Lap 290 -- Kasey Kahne returns to pit road because of a loose wheel.

Lap 288 -- Carl Edwards holds a 8.126-second lead after green-flag pit stops.
1. Carl Edwards
2. Jimmie Johnson
3. Kyle Busch
4. Denny Hamlin
5. Clint Bowyer

Lap 286 -- Jimmie Johnson and Kyle Busch race side-by-side for second as they split the lapped car of Regan Smith. Johnson takes the position.

Lap 284 -- Carl Edwards maintains the lead after the green-flag stops. Dale Earnhardt Jr. is on pit road.

Lap 283 -- Carl Edwards comes in for his stop as the leader. He gets minimal adjustments. Second-place Jimmie Johnson is also on pit road to follow the leader. Clint Bowyer pits as well with no adjustments.

Lap 282 -- Jeff Burton, Tony Stewart and Martin Truex Jr. are all on pit road.

Lap 281 -- Kyle Busch is on pit road for his stop. He gets four tires and is struggling with an extremely loose car. He gets multiple adjustments.

Lap 280 -- Kevin Harvick is on pit road to make a stop, which could be his final green-flag stop of the day.

Lap 276 -- David Gilliland hits pit road after brushing the wall. He had just lost a lap to the leader.

Lap 275 -- Carl Edwards is 7.860 seconds ahead of Jimmie Johnson.

Lap 266 -- Leader Carl Edwards puts Dale Earnhardt Jr. a lap down.

Lap 260 -- Dale Earnhardt Jr. is running 14th and struggling. He has one car between him and leader Jimmie Johnson from going one lap down.

Lap 259 -- David Reutimann pulls his car to the garage.

Lap 256 -- David Reutimann is on pit road for an overheating problem. His crew has the hood up.

Lap 255 -- Greg Biffle heads to the garage with an engine failure. The initial vibration problem was not his lug nut.

Lap 254 -- Carl Edwards is running away, building a 5.754-second lead ahead of Kyle Busch.

Lap 248 -- The unscheduled pit stop drops Greg Biffle to 27th place, two laps down.

Lap 243 -- Greg Biffle makes an unscheduled pit stop for a vibration. He had a loose wheel and was forced to give up 14th position.

Lap 240 -- Jeff Gordon came back out for another round of laps before taking his car behind the wall once again. Gordon is still in 43rd. He has only finished 43rd one other time in his career: at Texas in 1999.

Lap 239 -- Jeremy Mayfield is penalized for leaving his pit box with equipment. He makes a stop-and-go penalty.

Lap 235 -- With 100 laps to go, Carl Edwards leads by 2.171 seconds.
1. Carl Edwards
2. Kyle Busch
3. Jimmie Johnson
4. Denny Hamlin
5. Jeff Burton

Lap 233 -- LEAD CHANGE: Carl Edwards takes the lead again after Jimmie Johnson's pit stop.

Lap 232 -- Jimmie Johnson makes his pit stop as the leader and gets small adjustments. Jamie McMurray is also in for his stop.

Lap 231 -- Matt Kenseth pits for a track-bar adjustment and is really loose. Tony Stewart is in for a big change and says his car is "terrible."

Lap 230 -- LEAD CHANGE: Jimmie Johnson leads when Carl Edwards makes his stop for adjustments. Clint Bowyer is also in, as is Dale Earnhardt Jr.

Lap 229 -- Denny Hamlin and David Gilliland make their green-flag pit stops. Hamlin gets a small air-pressure adjustment and other big changes.

Lap 221 -- Jeff Gordon is back on the track to make a few laps. He is in 43rd and 108 laps down. He heads back to the garage since the changes his crew made didn't help the car's conditions.

Lap 219 -- Jimmie Johnson takes second from Kyle Busch, who is still struggling with a loose racecar.

Lap 215 -- LEAD CHANGE: Carl Edwards catches and passes Kyle Busch for the lead. Busch says he's "setting the table" for later in the race.

Lap 211 -- Carl Edwards is closing in on leader Kyle Busch.

Lap 203 -- Dale Earnhardt Jr. is battling his racecar. It's free on corner entry but tight in the middle of the turn. He has dropped to 10th.

Lap 200 -- Kyle Busch continues to lead Carl Edwards by 1.079 seconds.

Lap 192 -- All three Joe Gibbs Racing cars are running in the top 10: Kyle Busch (first), Denny Hamlin (third), Tony Stewart (10th).

Lap 187 -- RCR cars Jeff Burton and Clint Bowyer keep moving forward and are running eighth and ninth.

Lap 180 -- LEAD CHANGE: Kyle Busch gets the lead as the lapped car of Juan Montoya slides up the track and pushes Matt Kenseth even higher. Kenseth falls back to fourth before settling in.

Lap 180 -- GREEN FLAG: Matt Kenseth gets the race going again.
1. Matt Kenseth
2. Carl Edwards
3. Kyle Busch
4. Denny Hamlin
5. Dale Earnhardt Jr.

Lap 178 -- LEAD CHANGE: Matt Kenseth leads again after winning the race off pit road.

Lap 177 -- LEAD CHANGE: Jimmie Johnson is credited for leading the lap due to his pit stall position.

Lap 176 -- Leaders head to pit road:
• Matt Kenseth is loose and gets a half-round of wedge
• Kyle Busch gets a track-bar adjustment
• Tony Stewart needs to get his car tighter to turn
• Carl Edwards gains two spots with a good stop
• Jimmie Johnson gets adjustments but loses four spots
• Kevin Harvick gets the free pass

Lap 175 -- YELLOW FLAG NO. 4: J.J. Yeley crashes hard on the backstretch. He came off Turn 2 and got loose. His car went to the bottom of the track and smashed into the inside wall.

Lap 173 -- Matt Kenseth has led 62 laps, one more than Jimmie Johnson for the most in the race so far.

Lap 166 -- There are 22 cars on the lead lap. David Reutimann is running 22nd. Kevin Harvick is 23rd, one lap down.

Lap 157 -- Drivers racing in the top seven positions have led 100 percent of the race. Denny Hamlin, fifth, is the only driver among them not to lead.

Lap 150 -- Dale Earnhardt Jr. is battling a loose racecar and loses fourth and fifth position. He cuts his blower off on the left-front to try and tighten the car.

Lap 145 -- Tony Stewart is running eighth after starting in 24th.

Lap 137 -- Kyle Busch takes third place from Dale Earnhardt Jr.

Lap 136 -- GREEN FLAG: Matt Kenseth gets the race back under way.
1. Matt Kenseth
2. Jimmie Johnson
3. Dale Earnhardt Jr.
4. Kyle Busch
5. Denny Hamlin

Lap 134 -- LEAD CHANGE: Matt Kenseth leads again by winning the race off pit road.

Lap 133 -- LEAD CHANGE: Jimmie Johnson is credited with leading the lap due to Matt Kenseth's pit stall location.

Lap 133 -- Leaders head to pit road:
• Matt Kenseth gets no changes, just four tires
• Kyle Busch gets another air-pressure adjustment
• Tony Stewart seeks more adjustments
• Dale Earnhardt Jr. gains two spots and comes out third
• Carl Edwards loses three positions with a slow stop
• Kurt Busch gets the free pass

Lap 132 -- YELLOW FLAG NO. 3: Debris is in Turn 3.

Lap 125 -- John Andretti goes behind the wall with problems.

Lap 122 -- Jeff Gordon's crew is trying to work on his car: "I can't remember the last time we struggled this bad. We're just going to see if we can get back out there and do some testing. We've been way off, and we've got to find it because we can't go through the whole year like this."

Lap 120 -- RCR teammates Clint Bowyer and Jeff Burton run 10th and 11th. Their third teammate, Kevin Harvick, is running 25th, one lap down.

Lap 113 -- GREEN FLAG: Matt Kenseth gets the race back under way.
1. Matt Kenseth
2. Jimmie Johnson
3. Carl Edwards
4. Kyle Busch
5. Dale Earnhardt Jr.

Lap 111 -- LEAD CHANGE: Matt Kenseth is the new leader after winning the race off pit road.

Lap 110 -- Leaders head to pit road:
• Matt Kenseth wins the race off pit road with a fast stop
• Kasey Kahne gains one spot and comes out 10th
• The rest of the top 10 remains the same after stops and adjustments
• Jimmie Johnson gets a track-bar adjustment to tighten the car
• Carl Edwards gets another air-pressure adjustment
• Kyle Busch makes a track-bar adjustment
• Casey Mears gets the free pass

Lap 109 -- YELLOW FLAG NO. 2: Jeff Gordon wrecks in Turn 4 and has damage to the rear wing.

Lap 107 -- Matt Kenseth drives below Kyle Busch to take third. Busch is complaining of a loose racecar.

Lap 104 -- Robby Gordon brushes the wall again in Turn 3.

Lap 102 -- Denny Hamlin is running the high line and loses fifth spot to Dale Earnhardt Jr.

Lap 97 -- Elliott Sadler is reporting he has an electric problem. He slowed, then picked up speed again after potentially switching to his backup ignition. He is running 32nd.

Lap 96 -- Kurt Busch is struggling today, running 22nd and the first car one lap down.

Lap 90 -- The slow transition onto pit road dropped Dale Earnhardt Jr. to seventh position.

Lap 87 -- LEAD CHANGE: Jimmie Johnson is the new leader after Martin Truex Jr. makes his stop. Green-flag stops are complete with Johnson leading by 0.555 seconds.
1. Jimmie Johnson
2. Carl Edwards
3. Kyle Busch
4. Matt Kenseth
5. Denny Hamlin

Lap 85 -- LEAD CHANGE: Martin Truex Jr. is the leader when Dale Earnhardt Jr. pits for tires and a significant chassis adjustment. Earnhardt was very slow getting onto pit road and lost time because he was among the final cars to pit.

Lap 84 -- LEAD CHANGE: Dale Earnhardt Jr. is the leader when Jimmie Johnson pits. Tony Stewart and Kasey Kahne are also on pit road.

Lap 83 -- Kyle Busch is in for his stop and gets four tires. He asks for only an air-pressure adjustment. Carl Edwards is also in and gets an air-pressure adjustment.

Lap 82 -- Kevin Harvick is on pit road and battling a tight car. Jeff Gordon pits with a loose car. Both get four tires.

Lap 81 -- Matt Kenseth gives up sixth position to make his stop and requests more front grip. Bobby Labonte is on pit road, too.

Lap 79 -- Denny Hamlin begins green-flag pit stops with an air-pressure adjustment and tires.

Lap 76 -- Martin Truex Jr. is having a strong run. He started 12th and is currently in seventh.

Lap 70 -- Jimmie Johnson puts Jeff Gordon a lap down as second-place Kyle Busch begins to close the gap on Johnson.

Lap 60 -- Jeff Gordon is running 33rd and is one car from being put a lap down by leader and teammate Jimmie Johnson.

Lap 55 -- Kyle Busch moves around Dale Earnhardt Jr. for second. Carl Edwards follows for third.

Lap 51 -- Points leader Jeff Burton is on the move. He started 35th and is now running 13th.

Lap 47 -- LEAD CHANGE: Jimmie Johnson goes to the outside of Dale Earnhardt Jr. on the backstretch and becomes the new leader.

Lap 43 -- Four of the five Roush Fenway drivers are running in the top 10. Jamie McMurray is running 16th.

Lap 41 -- Greg Biffle moves around Kasey Kahne to take fifth position.

Lap 33 -- GREEN FLAG: Dale Earnhardt Jr. gets the race back under way.
1. Dale Earnhardt Jr.
2. Jimmie Johnson
3. Kyle Busch
4. Carl Edwards
5. Kasey Kahne

Lap 31 -- LEAD CHANGE: Dale Earnhardt Jr. is the new leader after winning the race off pit road.

Lap 30 -- LEAD CHANGE: Carl Edwards gets credit for leading the lap due to his position on pit road.

Lap 30 -- The leaders head to pit road:
• Kyle Busch gets air-pressure and wedge adjustments
• Carl Edwards gets a minor adjustment and tires
• Dale Earnhardt Jr. gets an adjustment for a loose car and is out first
• Jimmie Johnson's crew works on the track bar
• Michael McDowell gets the free pass

Lap 28 -- YELLOW FLAG NO. 1: Michael Waltrip spins in Turn 4. He was running in 23rd position and just lost it after getting too high in the corner. No damage.

Lap 24 -- Jeff Gordon is complaining of his car getting tight when he lifts off the throttle. "We're in trouble," he says to his crew. He runs 33rd.

Lap 21 -- Scott Riggs made an unscheduled pit stop. Meanwhile, a car brushed the wall in Turn 3, perhaps Robby Gordon.

Lap 14 -- LEAD CHANGE: Kyle Busch goes by Dale Earnhardt Jr. in Turn 3 to take the lead. Carl Edwards follows to take second.

Lap 11 -- Kyle Busch moves below Carl Edwards for second, but Edwards battles back on the high side. Busch holds the spot.

Lap 10 -- Carl Edwards and Kyle Busch have caught leader Dale Earnhardt Jr. Earnhardt says his car has no grip.

Lap 7 -- John Andretti makes an unscheduled pit stop for a vibration. It turns out to be a loose wheel.

Lap 3 -- Jeff Gordon has fallen from his 18th starting position to 24th. He has struggled all weekend with his car.

Lap 1 -- Dale Earnhardt Jr. pulls ahead and leads the first lap. Carl Edwards is behind him in second.

2:21 p.m. -- GREEN FLAG: Dale Earnhardt Jr. and Carl Edwards get the Samsung 500 under way from Texas Motor Speedway.

2:18 p.m. -- Three cars going to the back: David Reutimann (engine), Mike Skinner (engine) and Michael McDowell (backup car).

2:14 p.m. -- Cars are rolling onto the track.

2:10 p.m. -- Kerrie Rogers, winner of the Samsung 500 Ultimate Fan Sweepstakes, delivers the command: "Gentlemen, start your engines!"

2:04 p.m. -- The 36th Infantry Division Band of the Texas Army National Guard performs the national anthem.

2:03 p.m. -- Dr. Roger Marsh from Texas Alliance Raceway Ministries asks for a moment of silence for Max Helton, founder of Motor Racing Outreach. Marsh then delivers the invocation.

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

1:15 p.m. -- It's an hour until the green flag and sunny skies are surrounding Texas Motor Speedway.

WEEKEND HEADLINES
• Earnhardt hopes Sunday is 'his day' once again at TMS
• Texas familiar to Hornish, Cup still work in progress
• RCR drivers look forward to adding fourth car to mix
• McDowell's wrecked car to be examined by officials
• Edwards wanted pole, glad team is on familiar ground
• Menzer: Petty difficulties more than just pulling Kyle
• The King remains positive amid rough week for Petty
• Earnhardt Jr. earns pole for Sunday's Texas Cup race
• 'Mr. Burton,' McDowell chat after M'ville mends tension
• McDowell OK after near head-on crash in qualifying
• Gordon running better at Texas, still eyes first victory