5:00 pm - With three races in the books, Earnhardt holds onto the points lead by a slim 1 point margin over Keselowski. Jimmie Johnson's 6th place finish moved him up five slots in the standings to 3rd, 16 points behind Earnhardt.

4:45 pm - It was kind of a tough day for Vegas racers Kurt and Kyle Busch on their home track and neither driver got the finish he was hoping for. Kyle was able to recover from an early race pit miscue to lead three times for 51 laps but a loose car late in the race kept him from battling with the leaders and relegated him to an 11th place finish.

"We had a really up and down day with our M&M's Peanut Camry," he said.  "We started off getting blocked in the pits and had to come from the back.  The car was too loose on the first run and on the tight in the center of the corner and it was just getting looser and looser, especially on the last run.  Just disappointing when we looked like we had a good car earlier in the race."

Big brother Kurt was never a factor and ended up 26th, three laps behind the leaders.

4:35 pm - With today's victory, Brad Keselowski's completed the weekend sweep. The only other driver to sweep Nationwide and Cup Series races at LVMS is Jeff Burton, who did it in 2000. He led 5 times for a race high 53 laps and recorded his 11th series victory. He was running second when Earnhardt ran out of gas on the backstretch.

"It's very special to get a win early in the year when it's just such a reliever for everyone on the team and myself included to get that win in early and be able to enjoy the races and opportunities that we have instead of being stressed out about them," he said. "The chance that Dale and (crew chief) Steve (Letarte) took with the 88 car was way out there and it was a good, risky move on their part because they had nothing to lose because of this format."

4:25 pm - Paul Menard drove from 21st on the starting grid to finish 3rd. He took fuel only on the final pit stop to restart 4th. He led one time for 6 laps.

"It's big for sure," said Menard. We have had a really good car the first three races - just missed it about halfway through the race in Phoenix. This is good redemption. The guys never give up. When that caution came out, we knew that we were going to pit. The question was whether or not to take right sides or gas only. Took gas only, spun the tires really bad on the restart. Everybody on the outside lane seemed to really spin their tires. Whoever had clean air seemed like they checked out. We could race people and pass people, which was obviously really important. It was cool going up and passing Jimmie (Johnson) for the lead."

4:00 pm - Despite running out of gas on the last lap while leading the race, Dale Earnhardt, Jr. was in a pretty good mood after the race. When he walked into the media center for his post-race interview he grabbed the can of Mountain Dew Kickstart sitting on the table and joked, "That's all we needed - 16 ounces."

With the Daytona 500 win in his back pocket and the new championship format, he can afford to be upbeat. Earnhardt stayed on the track to take the lead and gamble nearly paid off with a trip to Victory Lane.

"This format has definitely allowed teams to gamble like we have," said Earnhardt, who led 51 of 267 laps. "It did pay off. Not the ultimate prize, but we did run second. As much as you want to win, and believe me, we were out there trying to win, you do take pride in a good performance. If we'd have run the same strategy as our competitors we would have probably run just inside the top 10 where we were all day. It's nice to have that freedom to do the things that we did today, even though we knew our odds weren't good. We really shouldn’t have made it and we didn’t but we got to try because of the new system."

2:52 pm - 1 lap to go - Earnhardt wiggles and he's out of fuel. Keselowski takes the lead and the win for the weekend sweep!

Earnhardt hangs on for 2nd.

3rd-5th: Menard, Logano, Edwards

2:50 pm -
Lap 261 - Earnhardt is in traffic and Keselowski is right on his back bumper.

2 laps to go - Earnhardt has a 0.5-second lead

2:48 pm - Lap 246 - Edwards gets loose and almost hits the wall. Keselowski takes over 2nd.

Lap 257 - Kyle Busch has fallen back to 10th.

2:39 pm - Lap 236 - Earnhardt has a 2 second lead over Edwards. Keselowski has climbed back to third with teammate Logano not far behind in 4th.

Lap 238 - Kyle Busch is losing positions. He can't hang onto the bottom of the track like he could earlier in the race when he was out front. He is currently 8th.

Lap 241 - Edwards has shaved 0.5-second off Earnhardt's lead.

2:31 pm - Earnhardt, Edwards and Hamlin stay on the track. Kenseth and Menard take fuel only during that round of yellow flag stops. Two tires for Kyle Busch and Keselowski

After stops, Top 10: Earnhardt, Edwards, Hamlin, Menard, Kyle Busch, Johnson, Keselowski, Logano, Gordon and Kenseth

Back to green on Lap 226

2:26 pm - Lap 221 - Caution #4 for debris on the frontstretch. Allmendinger gets the free pass. There are 19 cars on the lead lap.

2:20 pm - Lap 197 - Green flag pits stops for some. Johnson inherits the lead when Keselowski pits.
 
Lap 198 - Menard and Johnson battle for the lead and give it to Menard on Lap 199.

Lap 199 - Harvick is in the pits and there's smoke coming out from under the hood. Harvick headed to the garage for repairs. They have a burnt left hub and the crew is going to try to replace it and get Harvick back out for points.

Lap 205 - Menard gives up the lead to pit and Johnson inherits the lead

Lap 206 – Johnson, Kyle Busch to the pits. Earnhardt to the lead.

Lap 207 – Almirola to pit road

Lap 209 – Kurt Busch, Biffle and Patrick to the pits

Lap 211 – Kenseth, Grodon on pit road

Lap 212 – Earnhardt heads to pit road. Carl Edwards takes the lead.

Lap 213 – Edwards and Hamlin make their stops

Lap 213 – Running order after stops: Keselowski, Menard, Johnson, Kyle Busch

2:00 pm - Lap 174 - Keselowski has a 1 second lead over Harvick. Behind them, it's Johnson, Kyle Busch, Menard, Gordon, Martin Truex, Kenseth, Earnhardt, Hamlin

1:55 pm - 2 tires for almost everyone. Keselowski stays out and takes over the lead. Kahne and Kenseth get 4 tires. Several drivers take the wave around to get back on the lead lap: Vickers, Bayne, and Jeff Burton are among those.

Lap 157 - Running order after stops: Keselowski, Kyle Busch, Harvick, Johnson, Gordon, Earnhardt, Martin Truex, Hamlin, Menard, Logano, Kenseth

Lap 161 – Back to green

1:46 pm - Lap 149 – McDowell heads to pit road with engine trouble.

Lap 155 – Caution #3 for debris on the backstretch. Jamie McMurray will get the free pass putting 17 cars on the lead lap.

Harvick hit that debris but there doesn't appear to be much (if any) damage.
Lap 156 – Drivers to pit road.

1:42 pm
- Lap 131 - Top 10: Harvick, Kyle Busch, Johnson, Earnhardt, Gordon, Keselowski, Martin Truex, Menard, Kenseth and Hamlin.

Lap 136: Allmendinger loses a lap and comes to pit road for 4 tires, fuel and an adjustment.

Lap 140: Newman, Martin Truex pit

Lap 141: Johnson, Menard, Harvick, Logano, Patrick, Kahne, Dillon, Edwards, Kyle Busch,

Lap 141: Harvick gives up the lead to pit.

Lap 142: Keselowski inherits the lead for one lap and makes his pit stop.

Lap 143: Kenseth takes over the lead

Lap 143: Stenhouse gets a pass through penalty for speeding on entry

Lap 144: Kenseth heads to pit road

Lap 145: After green flag stops the top 5 drivers are: Harvick (with a 2 second lead), Kyle Busch, Johnson, Earnhardt, Gordon

1:32 pm - Lap 121 - Keselowski gets a touch loose and makes slight contact with the outside wall in Turn 4. He has some minor damage on the right rear.
 
Lap 126 – Kyle Busch has passed big brother Kurt to put him a lap down. 21 cars now on the lead lap.

Lap 129 – Harvick closes in on Kyle Busch in Turn 4 and Harvick takes the lead off Turn 2 on Lap 130.

1:27 pm - Lap 115 - Harvick gets around Johnson to take 3rd.

Lap 117 – Kyle Busch gets hung up by three slower cars and Harvick closes to within 0.5-second of the lead.

1:23 pm - Lap 110 - Kyle Busch continues to lead by a huge margin. He is running 3 seconds ahead of Johnson who is followed by Harvick, Keselowski and Earnhardt.

1:16 pm - Lap 88 – Ragan is the first to make a green flag stop and he'll have to serve a pass through penalty for speeding.

Lap 90 – Kyle Busch puts Greg Biffle one lap down.

Lap 91 – Logano, Ryan Truex, Kahne and Harvick make pit stops.

Lap 92 - Newman, McDowell, Annett to the pits

Lap 93 – Dillon, Gordon, Martin Truex pit

Lap 94 – Menard, Hamlin (2 tires), Burton, Almirola, Ambrose pit

Lap 95 – Larson to pit road (speeding – pass through penalty)

Lap 96 – Johnson, Kenseth, Bowyer and Timmy Hill pit

Lap 97 – Kyle Busch gives up the lead to Earnhardt to pit

Lap 98 – Earnhardt, Vickers and Keselowski pit

Lap 99 – After that round of pit stops – Top 5: Kyle Busch, Johnson, Earnhardt, Harvick and Gordon

1:10 pm - Lap 85 – 31 cars on the lead lap. We're closing in on green flag pit stops if we don't get a caution soon. 

1:05 pm - Lap 77 – Kyle Busch gets around Johnson to take the lead. He's the third different leader of the race.

Lap 82 - Earnhardt takes 2nd from Johnson.

12:57 pm - Lap 60 – The top 10 are: Johnson, Martin Truex, Kyle Busch, Earnhardt, Gordon, Dillon, Kenseth, Vickers, Keselowski, Hamlin

12:55 pm - Back to green on Lap 50. Ryan Truex got the free pass on that last caution.

Lap 57 - Kyle Busch is up to 4th.

12:50 pm - A bunch of drivers take 2 tires during that stop. Running order: Johnson, Gordon, Martin Truex, Dillon, Vickers, Earnhardt, Kahne, Kyle Busch, Larson.

Logano will restart 12th after taking 4 tires. That caution was a break for Tony Stewart who was about to lose a lap. His crew takes a long time to make multiple adjustments and Stewart will restart 40th.

12:45 pm - Lap 46 - Yellow Flag #2 for debris in Turn 3.

12:40 pm - Lap 33 - Kyle Busch is up to 25th after starting near the rear after that first pit stop.

Up front, Logano continues to lead. 2nd-5th are Keselowski, Johnson, Bowyer and Newman.

12:37 pm - Lap 29 - Aric Almirola and Danica Patrick make contact but get things sorted out.

12:33 pm - Everyone pits under this first caution except Keselowski. Logano is the first off pit road after changing just 2 ties. He is followed by Ragan, Johnson, Bowyer, Dillon, Newman, Stenhouse. Kyle Busch started to leave his pit but gets blocked in by Michael McDowell and backs up for an additional adjustment and restarts 41st. Green flag on Lap 23.

12:26 pm - Lap 18 - Caution #1 for fluid from a blown engine in Josh Wise's car. Wise heads to the garage. Running order under caution: Logano, Johnson, Bowyer, Keselowski, Stenhouse, Austin Dillon, Ryan Newman, Jamie McMurray, Martin Truex, Jr. Kligerman gets the free pass.

12:23 pm -  Lap 10: Logano, Clint Bowyer, Jimmie Johnson, Ricky Stenhouse Jr and Keselowski are the top five.

12:17 pm - Green Flag! Joey Logano grabs the lead while teammate Brad Keselowski falls back to 7th.

12:10 pm -
We're almost ready to get the green flag. Parker Kligerman and Marcos Ambrose are starting at the rear after engine changes. Cole Whitt falls to rear in a backup car. Jeff Gordon and Jeff Burton are the only drivers to start every Cup Series event at LVMS.

11:15 am - KWASNIEWSKI TEAMS UP WITH GANASSI - Dylan Kwasniewski is poised to become the next big thing to come out of Las Vegas and Chip Ganassi Racing with Felix Sabates wants to help him get there. Car owners Chip Ganassi and Felix Sabates announced today at LVMS that the 18-year old has joined the team as its newest development driver.

"We think Dylan's a pretty unique talent," said Ganassi. "He has the pedigree we look for. We're obviously looking for people who can wheel the cars. He's a raw talent at this age. His poise, skill and determination on the race track are remarkable for someone so young. I think Dylan has a big future ahead of him in NASCAR."

Kwasniewski made his Nationwide Series debut at Daytona International Speedway and he came out of the box strong, winning the pole and finishing 8th in the season opening event. Before that, he was the first driver to win the NASCAR K&N Pro Series West and East division championships in back to back years. His racing resume also includes seat time in IKF, STARS and SKUSA go-karts along with Bandoleros, Legend Cars and ASA Super Trucks. In 2007, he competed at the Las Vegas Motor Speedway Bullring in Bandoleros, winning 88 percent of the races he entered."

"I'm so thankful for the opportunity I'm given today," said the young driver. "I have wanted to do nothing but race for as long as I can remember. So this is a dream come true. This is what us drivers work for all of our years."

10:10 am - LET US ENTERTAIN YOU - As always, LVMS has lined up the best of the best to entertain fans prior to today's main event. The cast of Million Dollar Quartet, the Tony-award winning production show currently playing at Harrah's, will sing the national anthem. Today's flyover will be provided by no less than the world famous Thunderbirds, the official air demonstration team for the United States Air Force.

9:30 am - BUSCH NOT THAT CRAZY - Kurt Busch is getting in shape for his Memorial Day double at Indianapolis Motor Speedway and Charlotte Motor Speedway with a "boot camp style, martial arts infused" regimen three days a week and running on the weekends between now and the end of May. He's drawing the line, however, at rapelling out of the helicopter when he arrives at the race track.

During a press conference here at the speedway yesterday, Busch asked Marcus Smith, CMS' President and Chief Operating Officer if his helicopter could land on the frontstretch grass on race day, just like Tony Stewart's did when he completed the double several years ago.

"Sure, why not?" Smith said before attempting to up the ante. "You should come down on a cable. Rapel (from the helicopter)."

Busch quickly replied, "Negative, Ghost Rider. That pattern is full."

8:00 am - 300 AND COUNTING - Martin Truex, Jr is set to make his 300th career Sprint Cup Series start this afternoon. Truex won the 2004 and 2005 Nationwide Series championship before stepping up to NASCAR's premier touring division. His first Cup start was at Atlanta Motor Speedway in October 2004 driving for Dale Earnhardt, Inc. He recorded his first victory in Dover in June 2007 and followed it up five months later with his first pole at Texas Motor Speedway.

"Looking back, it seems like a long time ago that I made my first start but it really wasn't," Truex said. "They say when you're having fun tie flies and in my case, that is so true because I have had an incredible amount of fun over the years. I am only 33 and have a lot more years in me. I feel the best is still yet to come as a driver."

Truex has eight starts at LVMS and his best finish was 6th in 2011.

7:00 am - MENARD BABY WATCH - Paul Menard and his wife Jennifer are anxiously awaiting the birth of their first child, which is due at any time. NASCAR Truck Series champion Matt Crafton is standing by to drive the No. 27 Chevy just in case the call comes this morning and Menard needs to head for home. Crafton got some seat time earlier this weekend…just in case. 

6:00 am - Welcome to KOBALT 400 race day. Stay tuned for our coverage of today's event. Jonathan Goldsmith, AKA The Most Interesting Man in the World, will give the command to start engines and the Team Penske cars driven by Joey Logano and Brad Keselowksi will lead the field to green at high noon. Hometown heroes Kurt and Kyle Busch are starting 23rd and 20th, respectively. Both would like nothing more than to walk away with the winner's trophy and earn the bragging rights that go along with it.