By Lori Vizza

4:15 pm - Saturday Good Night - That's a wrap for on track activities today. Please join us tomorrow for the Monster Energy Cup Kobalt 400. And don't forget to spring your clocks forward tonight. 

3:51 pm - Logano wins the Boyd Gaming 300 - Joey Logano records his 28th career victory in the Xfinity Boyd Gaming 300.

Logano led the way through three restarts in the final 30 laps to hold off Kyle Larson and win the race by a margin of 0.602-second.

"Those restarts are crazy," said Logano. "It was hard to figure out what lane to take. That's three wins in a row for this 12 car and that's something that I'm proud to be part of."

Larson started the race seventh ran near the front most of the race and held on for the runner up finish.

"We were really good," Larson explained. We were better than everybody else earlier. Joey and I were pretty equal, just clean air made the difference. We almost cleared (Logano) a couple of times but he had the momentum."

3:50 pm - Boyd Gaming 300 Checkers - The field gets the restart with 4 laps to go. Logano pulls out briefly in the outside lane but Larson battles back even with Logano on the backstretch. Logano is just too strong and regains the lead through Turns 3 and 4.

2 laps to go - Logano has 0.297-sec lead. 

White flag - Logano is way out front. A four-wide tangle sends Ty Dillon spinning to the inside of the track but there's no caution.

And Logano holds off Larson to take the checkers!

2nd-5th: Larson, Suarez, Allgaier, Austin Dillon.

3:45 pm - Boyd Gaming 300 Lap 193 Update - Y#9 for a crash involving Tifft and Gallagher. 

We'll line 'em back up for another restart. No change in the top 4 since the last update. Reed moved around Allgaier for 5th. 

Keselowski is restarting 12th. 

Back to green on Lap 196.

3:35 pm - Boyd Gaming 300 Lap 181 Update - Y#8 for a spin by Yeley on the backstretch.

Restart order: Logano, Larson, Busch, Austin Dillon, Suarez, Allgaier, Reed, Wallace, Ty Dillon, Custer, Keselowski

Logano restarts in the outside lane.

Back to green on Lap 188.

3:25 pm - Boyd Gaming 300 Lap 171 Update - Y#7 as Ray Black, Jr. loops his Chevy. Martin Roy has a near miss as he threads the needle to avoid Black.

Drivers from 16th position back come down pit road.

Up front, Logano is still first, followed by Busch, Wallace, Larson, Suarez, Austin Dillon, Jones, Reed, Ty Dillon, Allgaier, Custer

There are 24 cars on the lead lap.

Hemric is the beneficiary.

Keselowski restarts 12th.

This time Logano restarts on the outside lane.

Back to green on Lap 176.

3:10 pm - Boyd Gaming 300 Lap 162 Update - Y#6 for debris on the backstretch.

This is a break for Keselowski who was off sequence after that miscue on pit road. He made it back up to 14th, the final car on the lead lap. Keselowski heads down pit road along with the leaders.

Byron is the beneficiary.

McLeod is penalized for too many men over the wall. He'll restart at the tail end of the field.

Running order for the restart: Logano, Larson, Busch, Suarez, Wallace, Ty Dillon, Reed, Austin Dillon, Allgaier, Custer, Byron, Jones, Tifft, Sadler, Keselowski

Logano chooses the inside lane for the restart.

17 drivers took the wave around.

Back to green on Lap 168.

3:00 pm - Boyd Gaming 300 Lap 138 Update - We're still under green with Logano still in the lead.

Gallagher gives up track position to start green flag pit stops.

Suarez comes to pit road on Lap 139

Lap 141: Jones and Byron make stops.

Lap 142: Reed makes a stop.

Lap 143: Busch to pit road.

Lap 144: Logano gives up the lead to make his stop and that puts Larson in the lead.

Lap 145: Larson gives up the lead to stop. Allgaier stops. Yeley takes the lead

Lap 145: Wallace to pit road.

Lap 146: Yeley goes to pit road.

Lap 148: Logano cycles back into the lead. Behind him it's Busch, Larson, Suarez, Wallace, Reed, Ty Dillon, Allgaier, Austin Dillon, Tifft

Logano's lead is 0.838-second.

2:40 pm - Boyd Gaming 300 Lap 109 Update - Keselowski makes an unscheduled pit stop under green for a loose left rear wheel. He drops back to 31st in the running order and the last driver one lap behind the leaders. 

Meanwhile up front, Logano continues to lead, followed by Busch, Larson, Austin Dillon and Suarez.

2:35 pm - Boyd Gaming 300 Lap 92 Update - Y#5 as we complete Stage 2. Keselowski wins that one.

Running order under caution: Keselowski, Busch, Allgaier, Larson, Hemric, Logano, Austin Dillon, Wallace, Tifft, Suarez

Pit stops for the leaders take place on Lap 93. Most of the drivers who stopped earlier will stay out for track position.

Wallace was the only driver who got new tires. It was adjustments and fuel only for the rest.

Running order for the restart: Logano, Suarez, Jones, Austin Dillon, Custer, Byron, Poole, Gallagher, Koch, Larson

Larson was the first driver off pit road of those that did stop.

Herring is the beneficiary.

Logano choses the outside lane for the restart.

Back to green on Lap 99.

2:18 pm - Boyd Gaming 300 Lap 81 Update - Brendan Gaughan brings out the Y#4 as he loses control off Turn 2 and taps the wall.

Gaughan heads to pit road.

Some of the guys up front take this opportunity to pit.

Larson gives up the lead to make a stop. (He restarts 14th)

Running order for the restart: Keselowski, Busch, Allgaier, Wallace, Reed, Hemric, Austin Dillon, Jones, Tifft, Sieg

Annett is the beneficiary

There are 6 laps to go in this 2nd stage.

Back to green on Lap 85.

2:10 pm - Boyd Gaming 300 Lap 72 Update - Y#3 as Tifft loses control in Turn 2 and scrapes the outside wall.

Running order under caution: Larson, Logano, Busch, Keselowski and Allagaier

Several drivers use this opportunity to make a pit stop. Austin Dillon, running 7th, is the highest in the running order to make a pit stop.

Despite the mishap, Tifft manages to stay on the lead lap.

Gallagher is the beneficiary.

Back to green on Lap 76

"It jumped out from under me," said Tifft to his crew.

2:00 pm - Boyd Gaming 300 Lap 64 Update - After having trouble getting through inspection this morning, Gaughan's problems continue with a carburetor on the No 62 Chevy. He loses a lap to the leaders and heads to pit road for an unscheduled stop. He'll lose several laps as the crew feverishly changes out the part. 

1:55 pm - Boyd Gaming 300 Lap 49 Update - Busch loses the lead for the first time day on that exchange of pit stops. Larson beats the field off pit land followed by Logano, Busch, Allgaier, Keselowski, Ty Dillon, Wallace, Reed, Tifft and Suarez.

The beneficiary was Blake Koch, putting 23 drivers on the lead lap.

Back to green on Lap 53.

1:45 pm - Boyd Gaming 300 Lap 47 Update - Yellow #2 as we complete the first stage of the race. And we're ready for the first round of pit stops.

Busch has led every lap so far and Larson was the only driver to even make a move for the lead through that first 45 laps.

The first time came on lap Lap 33 but Busch was able to use slower traffic to hold onto the number 1 position. As the stage came to a close, Larson again peeked to the inside but Busch beat him to the start/finish line…barely.

There are 22 cars remaining on the lead lap. 

Drivers out of the race: Steven Leicht, Brandon Hightower and Jordan Anderson.

Top 10 under caution: Busch, Larson, Logano, Keselowski, Allgaier, Suarez, Tifft, Wallace, Austin Dillon, Reed

1:25 pm - Boyd Gaming 300 Lap 6 Update - We're under caution for the first time as Steven Leicht becomes the first casualty when he
scrapes the wall of Turn 2. He continues on around the track and heads to the garage.

Top 5 under caution - Busch, Suarez, Keselowski, Logano, and Austin Dillon

A handful of drivers come to pit road but the guys up front stay out to maintain track position.

Back to green on Lap 10.

1:20 pm - Boyd Gaming 300 Green Flag - The field is following the pace car for a few warm-up laps. Today's race will be 200 laps, which adds up to 300 miles around this 1.5-mile speedway.

And by the way...Las Vegas' own Gaughan reaches a big milestone when he crosses the start/finish line as he makes his 500th NASCAR start after having competed in the K&N Pro Series West, Truck Series, Xfinity Series and Cup Series

Green flag!

Pole winner Kyle Busch chose to start in the inside lane and he pulls into the lead on the backstretch and tows the field around to lead Lap 1. Behind Busch is Keselowski, Suarez, Logano and Austin Dillon.

12:30 pm - Truex Fastest in Final Cup Practice - And it's all done but the racin'. Truex closed out the final practice on top of the speed chart with a 188.613 mph lap. Chase Elliott was 2nd fastest at 188.574 mph. Dale Earnhardt, Jr., Matt Kenseth, and pole winner Brad Keselowski were 3rd through 5th. 

11:35 am - Cup Final Practice Underway - Seven-time Champ Jimmie Johnson is the first driver off pit road for this final practice session for tomorrow's Kobalt 400. The drivers will have 50 minutes to shake down their cars on a track that is as close as it's going to get to race conditions. 

11:30 am - Boyd Gaming 300 Pole Stats - With today's pole position, Kyle Busch extended his current series record to 59 poles in 330 NASCAR Xfinity starts. This is Busch's second pole of 2017 and his second pole in 13 series events at LVMS.

Brad Keselowski recorded his second top-10 start of the season and his sixth top-10 start in 10 races at LVMS.

Matt Tifft was the fastest qualifying rookie and will start today's race from sixth on the grid.

11:10 am - Busch Wins Boyd Gaming 300 Pole - Kyle Busch won the pole for today's race with a speed of 185.580 mph. After setting a new track record of 186.220 mph in Round 1, Keselowski ran 185.459 mph lap and will line up next to Busch on the front row. Starting 3rd through 5th are Suarez, Logano, and Austin Dillon.  

10:55 am - Xfinity Qualifying Round 2 Complete - Kyle Busch wins that round with a lap of 185.331 mph. Teammates Logano and Keselowski were 2nd and 3rd fastest, respectively. Rounding out the top five were Kyle Larson and Daniel Suarez. The remaining seven drivers advancing to Round 3 are Austin Dillon, Spencer Gallagher, Matt Tifft, Ty Dillon, Daniel Hemric, Ryan Reed and Brennan Poole.

Gaughan says he over adjusted on that run, which denies him a chance to run for the pole and relegates him to 17th on the starting grid. 

10:40 am - Xfinity Qualifying Round 1 Complete - Brad Keselowski unleashed a spectacular lap of 186.220 mph to lead the 1st round of qualifying. The lap surpassed the current series qualifying record, which was 185.427 mph set by none other than Keselowski himself in 2010. 2nd through 5th are Joey Logano, Kyle Larson, Austin Dillon, and Ty Dillon.

After the posting the fastest lap in yesterday's practice session, Brendan Gaughan's team struggled to get their South Point Chevy through tech this morning. As a result, Gaughan was late to the qualifying party but managed to post the 13th quickest lap anyway and will advance to Round 2.

10:15 am - Xfinity Qualifying Up Next - The track is open for the first round of Xfinity Series qualifying for this afternoon's event. The session was delayed by about 10 minute to allow time for everyone to get through technical inspection. Three cars have taken a lap with Brandon Jones showing the way at 180.469 mph in the early going.

10:00 am - Elliott Fastest in Practice - Chase Elliott's earlier lap of 191.510 mph held up as the fastest of the session. There were no changes among the top five since the halfway update. Ryan Blaney and Kurt Busch were sixth and seventh, respectively. 

9:30 am - Cup Practice Update - We're approximately halfway through this session and for now, Chase Elliott is in the top spot with a speed of 191.510 mph. Kyle Larson is second, followed by Matt Keneth, Kyle Busch and Kasey Kahne. Pole winner Brad Keselowski is currently 21st fastest.

9:00 am - Good morning and welcome to Day 2 of NASCAR weekend. The Cup cars have 55 minute of practice this morning and a final 50 minutes at 11:30 am. The Xifinity Car will have qualifying starting at 10:05 am and they'll line up for the Boyd Gaming 300 with the green flag scheduled to drop at 1:00 pm. Come on out and join us or stay tuned right here for all the action as it happens.