2015 Kobalt 400
|Race 3 of 36 in the 2015 NASCAR Sprint Cup Series|
|Date||March 8, 2015|
|Location||Las Vegas Motor Speedway in Las Vegas|
Permanent racing facility|
1.5 mi (2.41 km)
|Distance||267 laps, 400.5 mi (644.542 km)|
|Weather||Sunny skies with a temperature of 72 °F (22 °C); wind out of the south/southwest at 3.5 mph (5.6 km/h)|
|Average speed||143.667 mph (231.210 km/h)|
|Most laps led|
|Driver||Kevin Harvick||Stewart-Haas Racing|
|No. 4||Kevin Harvick||Stewart-Haas Racing|
|Television in the United States|
|Announcers||Mike Joy, Larry McReynolds and Darrell Waltrip|
7.7 Million viewers
|Radio in the United States|
|Booth Announcers||Doug Rice, Mark Garrow and Wendy Venturini|
|Turn Announcers||Rob Albright (1 & 2) and Pat Patterson (3 & 4)|
The 2015 Kobalt 400 was a NASCAR Sprint Cup Series race held on March 8, 2015, at Las Vegas Motor Speedway in Las Vegas. Contested over 267 laps on the 1.5 mi (2.4 km) asphalt tri-oval, it was the third race of the 2015 NASCAR Sprint Cup Series season. Kevin Harvick won the race, his first of the season, while Martin Truex, Jr. finished second. Ryan Newman, Dale Earnhardt, Jr. and Denny Hamlin rounded out the top five.
Jeff Gordon set a new track record time on his way to winning the pole for the race. Unfortunately, he started the race from the rear of the field after an incident in practice and never led a single lap in his final race at the track. The race had 18 lead changes among nine different drivers, as well as six caution flag periods for 28 laps.
Harvick's 29th career victory was his first at Las Vegas Motor Speedway and the second at the track for Stewart-Haas Racing. With the win, he leapfrogged Joey Logano for the points lead and left the track with a nine-point lead over Earnhardt. Chevrolet increased their lead over Ford to eleven points in the manufacturers' standings.
The race was carried by Fox Sports on the broadcast Fox network for the American television audience. The radio broadcast of the race was carried by the Performance Racing Network and Sirius XM NASCAR Radio.
- 1 Report
- 2 First practice
- 3 Qualifying
- 4 Practice (post-qualifying)
- 5 Race
- 6 Media
- 7 Standings after the race
- 8 Notes
- 9 References
Las Vegas Motor Speedway, located in Clark County, Nevada about 15 miles (24 km) northeast of the Las Vegas Strip, is a 1,200-acre (490 ha) complex of multiple tracks for motorsports racing. The complex is owned by Speedway Motorsports, Inc., which is headquartered in Charlotte, North Carolina.
Joey Logano entered Las Vegas with a one-point lead over Jimmie Johnson who scored his 71st career win the previous week at Atlanta Motor Speedway. Kevin Harvick came into Vegas third in the points two back of Logano, having led 116 of the 325 laps at Atlanta. Dale Earnhardt, Jr. entered fourth in the points four back, while Martin Truex, Jr. entered fifth in the points 13 back.
The entry list for the Kobalt 400 was released on Monday, March 2, 2015 at 9:00 a.m. Eastern time. Forty-eight drivers are entered for the race. All 48, except Ryan Blaney and the No. 21 Wood Brothers Racing Ford and Ty Dillon, were entered to race the previous week in Atlanta. Dillon drove the No. 33 Hillman-Circle Sport LLC Chevrolet. No driver was on the initial entry list to drive the No. 34 Front Row Motorsports Ford in place of David Ragan who drove in place of the injured Kyle Busch. On Wednesday, March 4, Brett Moffitt, coming off an 8th-place finish at Atlanta, was named to drive the No. 34 car. Moffitt stated that he was "excited about the opportunity to run some races for Front Row", and that he was "grateful to Bob Jenkins and his team for giving me the chance to do that". Brian Vickers, the driver who Moffitt was driving in place of – at Michael Waltrip Racing – was in the No. 55 Toyota, having missed the first two races while recovering from corrective heart surgery.
Kyle Larson was the fastest in the first practice session with a time of 28.177 and a speed of 191.646 mph (308.424 km/h). Brian Vickers, making his first start since undergoing heart surgery in December, was 33rd fastest in the session. Vickers described his return as "awesome" and that he was "really excited to be back".
|1||42||Kyle Larson||Chip Ganassi Racing||Chevrolet||28.177||191.646|
|2||24||Jeff Gordon||Hendrick Motorsports||Chevrolet||28.239||191.225|
|3||2||Brad Keselowski||Team Penske||Ford||28.267||191.035|
|Official first practice results|
Jeff Gordon won his 79th career pole with a new track record time of 27.738 and a speed of 194.679 mph (313.305 km/h). Gordon took pole by 0.052 seconds ahead of Joey Logano, and ultimately described the margin as "real close". Gordon added that he was "just so proud of this team and keeping their heads up". Logano himself repeated Gordon's point on the close margin, adding that his Ford "ha[d] some speed in it which is cool". Dale Earnhardt, Jr. qualified fourth, which pleased him, stating that his recent performances on the intermediate tracks gave him "hope it is a sign of things to come". Following a multi-car crash in qualifying at Daytona and 13 cars not making it through inspection at Atlanta, the only hiccup in qualifying belonged to Brad Keselowski. Just as he was about to get in his car to qualify in round 1, a NASCAR official ordered his team to take the car back to the inspection line after witnessing the team pulled out the wheel wells which had been outlawed during the offseason. Reed Sorenson, Mike Bliss, Travis Kvapil, Mike Wallace, and Matt DiBenedetto all failed to qualify for the race.
|1||24||Jeff Gordon[N 1]||Hendrick Motorsports||Chevrolet||28.245||27.885||27.738|
|2||22||Joey Logano||Team Penske||Ford||27.966||27.908||27.790|
|3||5||Kasey Kahne||Hendrick Motorsports||Chevrolet||28.097||27.928||27.794|
|4||88||Dale Earnhardt, Jr.||Hendrick Motorsports||Chevrolet||28.105||27.928||27.822|
|5||42||Kyle Larson||Chip Ganassi Racing||Chevrolet||27.994||27.880||27.841|
|6||20||Matt Kenseth||Joe Gibbs Racing||Toyota||28.057||27.937||27.888|
|7||31||Ryan Newman||Richard Childress Racing||Chevrolet||28.292||27.996||27.906|
|8||78||Martin Truex, Jr.||Furniture Row Racing||Chevrolet||28.132||27.996||27.932|
|9||48||Jimmie Johnson||Hendrick Motorsports||Chevrolet||28.128||27.984||27.931|
|10||1||Jamie McMurray||Chip Ganassi Racing||Chevrolet||28.236||27.859||27.963|
|11||2||Brad Keselowski||Team Penske||Ford||28.124||28.005||28.044|
|12||14||Tony Stewart||Stewart-Haas Racing||Chevrolet||28.196||28.011||28.083|
|13||18||David Ragan[N 1]||Joe Gibbs Racing||Toyota||28.236||28.025||—|
|14||19||Carl Edwards||Joe Gibbs Racing||Toyota||28.144||28.048||—|
|15||43||Aric Almirola||Richard Petty Motorsports||Ford||28.352||28.056||—|
|16||16||Greg Biffle||Roush Fenway Racing||Ford||28.326||28.063||—|
|17||13||Casey Mears||Germain Racing||Chevrolet||28.194||28.082||—|
|18||4||Kevin Harvick||Stewart-Haas Racing||Chevrolet||28.345||28.084||—|
|19||11||Denny Hamlin||Joe Gibbs Racing||Toyota||28.313||28.157||—|
|20||15||Clint Bowyer||Michael Waltrip Racing||Toyota||28.340||28.159||—|
|21||10||Danica Patrick[N 1]||Stewart-Haas Racing||Chevrolet||28.274||28.195||—|
|22||47||A. J. Allmendinger||JTG Daugherty Racing||Chevrolet||28.350||28.222||—|
|23||33||Brian Scott (i)||Hillman-Circle Sport LLC||Chevrolet||28.332||28.337||—|
|24||27||Paul Menard||Richard Childress Racing||Chevrolet||28.355||28.422||—|
|25||3||Austin Dillon||Richard Childress Racing||Chevrolet||28.368||—||—|
|26||51||Justin Allgaier||HScott Motorsports||Chevrolet||28.426||—||—|
|27||7||Alex Bowman||Tommy Baldwin Racing||Chevrolet||28.429||—||—|
|28||55||Brian Vickers||Michael Waltrip Racing||Toyota||28.448||—||—|
|29||9||Sam Hornish, Jr.||Richard Petty Motorsports||Ford||28.462||—||—|
|30||21||Ryan Blaney (i)||Wood Brothers Racing||Ford||28.504||—||—|
|31||17||Ricky Stenhouse, Jr.||Roush Fenway Racing||Ford||28.518||—||—|
|32||95||Michael McDowell||Leavine Family Racing||Ford||28.524||—||—|
|33||46||Michael Annett||HScott Motorsports||Chevrolet||28.537||—||—|
|34||41||Regan Smith (i)||Stewart-Haas Racing||Chevrolet||28.539||—||—|
|35||6||Trevor Bayne||Roush Fenway Racing||Ford||28.571||—||—|
|36||34||Brett Moffitt (R)||Front Row Motorsports||Ford||28.649||—||—|
|37||38||David Gilliland||Front Row Motorsports||Ford||28.865||—||—|
|38||35||Cole Whitt||Front Row Motorsports||Ford||28.948||—||—|
|39||98||Josh Wise||Phil Parsons Racing||Ford||28.970||—||—|
|40||23||J. J. Yeley (i)||BK Racing||Toyota||29.008||—||—|
|41||26||Jeb Burton (R)||BK Racing||Toyota||29.076||—||—|
|42||40||Landon Cassill (i)||Hillman-Circle Sport LLC||Chevrolet||29.441||—||—|
|43||62||Brendan Gaughan (i)||Premium Motorsports||Chevrolet||29.518||—||—|
|Did not qualify|
|44||32||Mike Bliss (i)||Go FAS Racing||Ford||29.092||—||—|
|45||29||Reed Sorenson||RAB Racing||Toyota||29.201||—||—|
|46||44||Travis Kvapil (i)||Team XTREME Racing||Chevrolet||29.247||—||—|
|47||66||Mike Wallace||Premium Motorsports||Chevrolet||29.794||—||—|
|48||83||Matt DiBenedetto (R)||BK Racing||Toyota||29.889||—||—|
|Official qualifying results|
Jimmie Johnson was the fastest in the second practice session with a time of 28.141 and a speed of 191.891 mph (308.819 km/h). Aric Almirola spun off of turn 2 and slid down the track with nine minutes remaining in the session. He stopped a few feet short of the inside wall on the backstretch and drove the car back to the garage.
|1||48||Jimmie Johnson||Hendrick Motorsports||Chevrolet||28.141||191.891|
|2||31||Ryan Newman||Richard Childress Racing||Chevrolet||28.455||189.773|
|3||4||Kevin Harvick||Stewart-Haas Racing||Chevrolet||28.471||189.667|
|Official second practice results|
Jimmie Johnson was the fastest in the final practice session with a time of 28.779 and a speed of 187.637 mph (301.972 km/h). In the final minute of the session, Danica Patrick spun out exiting turn 2 and was hit by Jeff Gordon. The resultant damage from the collision forced Gordon's team to switch to their backup car, and as a result, Gordon started from the rear of the field. The collision came just seconds after David Ragan hit the wall in turn 1. He also switched to his backup car and also started from the rear.
|1||48||Jimmie Johnson||Hendrick Motorsports||Chevrolet||28.779||187.637|
|2||22||Joey Logano||Team Penske||Ford||28.890||186.916|
|3||13||Casey Mears||Germain Racing||Chevrolet||28.961||186.458|
|Official final practice results|
The race was scheduled to start at 3:46 p.m. Eastern time, but started a couple of minutes later when Kasey Kahne led the field to the green flag. He was immediately passed by Joey Logano who took the lead on the second lap. Jeff Gordon, who dropped to the rear of the field for switching to a backup car, moved up to 24th in the first 20 laps. He made it to 21st in the running order when the first caution of the race flew on lap 26. This was a scheduled competition caution, normally done when there has been overnight showers, to allow teams to check tire wear. As Logano was trying to exit pit road, Jeff Gordon, whose stall was right in front of his, blocked his exit momentarily and Dale Earnhardt, Jr. exited pit road as the leader. Alex Bowman stayed out to lead a lap before pitting and giving the lead to Earnhardt. Unfortunately for Bowman, his engine started blowing up and he was forced to take his car to the garage.
The race restarted on lap 31 and it did not take long for Logano to find his way back to the lead. Jimmie Johnson reeled in Logano and took the lead on lap 44. Earnhardt Jr. had pulled up to him by lap 63, but had trouble getting around lapped traffic and Johnson pulled away. A number of cars began pitting on lap 75. Johnson gave up the lead on lap 77 to pit and handed the lead to Carl Edwards. He pitted on lap 79 and handed the lead to Matt Kenseth. He pitted the next lap and the lead cycled back to Johnson. Brendan Gaughan and Brian Scott were forced to serve a drive-through penalty for speeding on pit road.
Green flag stops
Debris in turn 1 brought out the second caution on lap 82. This was a saving grace for Brad Keselowski who was reporting a vibration. Aric Almirola was forced to drop to the end of the longest line for speeding on pit road, as did Tony Stewart, as a tire rolled out of his pit box. The race restarted on lap 87. Four laps later, Kevin Harvick powered his way around Johnson, who made an unscheduled stop for a loose wheel, to take the lead. He rejoined the race 33rd one lap down. The next set of green flag stops began on lap 129 when Martin Truex, Jr. gave up tenth to pit. Harvick gave up the lead on lap 132 to hit pit road and Keselowski took the top spot. He held the lead for two laps before pitting on lap 134. This allowed his teammate Joey Logano to retake the lead. Keselowski was forced to serve a drive-through penalty for an uncontrolled tire rolling out onto the tri-oval grass area, which brought out the third caution of the race on lap 139.
The race restarted on lap 145 and Harvick would lose the lead to Martin Truex Jr. He eventually lost the lead to Harvick on lap 149. The fourth caution of the race flew on lap 172 when Jimmie Johnson blew a right-front tire and his car hit the wall in the tri-oval. Jeb Burton, slowing down to avoid Johnson, got turned into the wall by Jeff Gordon. Joey Logano was forced to drop to the end of the longest line for speeding on pit road. He was joined by David Ragan for an uncontrolled tire.
Trouble for Johnson
The race restarted on lap 178. The fifth caution flew with 82 laps to go when Jimmie Johnson blew another right-front tire and again hit the wall again in turn 4. Upon exiting his car, Johnson explained that on the first puncture, his team believed that "the bead blew on it", while on the second puncture, the tire "went soft going into Turn 3 and I hit the wall, unfortunately". Joey Logano was again sent to the back of the line, for speeding on pit road. The race restarted with 75 laps to go. Carl Edwards pushed Kasey Kahne into the wall exiting turn 4. Kahne, in retaliation, turned down on Edwards in turn 1 and sent him spinning, bringing out the sixth caution of the race with 74 to go. During the period, Aric Almirola was again caught speeding on pit road.
The race restarted with 69 laps to go and Dale Earnhardt Jr. took back the lead. He would lose it two laps later to Harvick. He made his final stop with 37 laps to go and handed the lead to Ryan Newman. He went until 25 laps to go before pitting and handing the lead to Brad Keselowski. He pitted with 17 laps to go and Kevin Harvick cycled back to the lead and coasted to his 29th career victory.
Harvick felt that it was "so cool to win here in Las Vegas and start this West Coast swing off this way is pretty awesome" and that he was "glad the race is over at that particular point for our own good".
The No. 51 team was penalized for a rules infraction discovered during post-race inspection March 8 at Las Vegas Motor Speedway. This infraction is a P3 level penalty and violates the following Sections in the 2015 NASCAR rule book:
- 12.1: Actions detrimental to stock car racing;
- 20.3.5: Added ballast containers:
- a. Any and all ballast added to the vehicle must be bolted inside an added ballast container, inside the main frame rails, and/or inside the front sway bar.
- b. Added ballast must be secured in a manner that will prevent movement of the ballast during an event.
- 18.104.22.168: Overall vehicle weight after competition:
- b. After a vehicle has raced, only water in the radiator, oil in the engine reservoir tank, and fuel in the fuel cell may be added. Wheels and tires may not be changed, unless otherwise authorized by NASCAR Officials.
- c. After a vehicle has raced, the minimum overall vehicle weight of all vehicles must be within 0.5% of the minimum overall vehicle weight required at the start of the race.
Ballast was observed falling off the No. 51 car during the race and the No. 51 car did not meet post-race minimum weight requirements. As a result of the violation, crew chief Steve Addington was fined $25,000.
The No. 2 team was penalized for a rules infraction committed when it was discovered that the right and left rear quarter panel wheel openings were modified after qualifying inspection on March 6. This infraction is a P2 level penalty and violates the following Sections in the 2015 NASCAR rule book:
- 12.1: Actions detrimental to stock car racing;
- 20.4.b: Body – All approved OEM-manufactured body components must be used as supplied except as required to stiffen, or to attach to other vehicle components. Tolerances from CAD surfaces and template tolerances are provided to allow for manufacturing, fabrication, and installation variability;
- 20.4.2: Surface Conformance – Coordinate measuring machines, scanning equipment, and templates, among other tools, will be used to inspect body surfaces for conformance to the approved OEM and NASCAR CAD files.
|1||18||4||Kevin Harvick||Stewart-Haas Racing||Chevrolet||267||48|
|2||8||78||Martin Truex, Jr.||Furniture Row Racing||Chevrolet||267||43|
|3||7||31||Ryan Newman||Richard Childress Racing||Chevrolet||267||42|
|4||4||88||Dale Earnhardt, Jr.||Hendrick Motorsports||Chevrolet||267||41|
|5||19||11||Denny Hamlin||Joe Gibbs Racing||Toyota||267||39|
|6||22||47||A. J. Allmendinger||JTG Daugherty Racing||Chevrolet||267||38|
|7||11||2||Brad Keselowski||Team Penske||Ford||267||38|
|8||5||42||Kyle Larson||Chip Ganassi Racing||Chevrolet||267||36|
|9||6||20||Matt Kenseth||Joe Gibbs Racing||Toyota||267||36|
|10||2||22||Joey Logano||Team Penske||Ford||267||35|
|11||10||1||Jamie McMurray||Chip Ganassi Racing||Chevrolet||267||33|
|12||24||27||Paul Menard||Richard Childress Racing||Chevrolet||267||32|
|13||23||33||Brian Scott||Richard Childress Racing||Chevrolet||267||0|
|14||16||16||Greg Biffle||Roush Fenway Racing||Ford||266||30|
|15||28||55||Brian Vickers||Michael Waltrip Racing||Toyota||266||29|
|16||34||41||Regan Smith||Stewart-Haas Racing||Chevrolet||266||0|
|17||3||5||Kasey Kahne||Hendrick Motorsports||Chevrolet||266||27|
|18||1||24||Jeff Gordon||Hendrick Motorsports||Chevrolet||266||26|
|19||30||21||Ryan Blaney||Wood Brothers Racing||Ford||266||0|
|20||30||3||Austin Dillon||Richard Childress Racing||Chevrolet||265||24|
|21||25||15||Clint Bowyer||Michael Waltrip Racing||Toyota||265||23|
|22||20||18||David Ragan||Joe Gibbs Racing||Toyota||265||22|
|23||13||38||David Gilliland||Front Row Motorsports||Ford||265||21|
|24||29||9||Sam Hornish, Jr.||Richard Petty Motorsports||Ford||265||20|
|25||17||13||Casey Mears||Germain Racing||Chevrolet||264||19|
|26||15||43||Aric Almirola||Richard Petty Motorsports||Ford||264||18|
|27||21||10||Danica Patrick||Stewart-Haas Racing||Chevrolet||264||17|
|28||35||6||Trevor Bayne||Roush Fenway Racing||Ford||264||16|
|29||31||17||Ricky Stenhouse, Jr.||Roush Fenway Racing||Ford||264||15|
|30||32||95||Michael McDowell||Leavine Family Racing||Ford||264||14|
|31||26||51||Justin Allgaier||HScott Motorsports||Chevrolet||263||13|
|32||38||35||Cole Whitt||Front Row Motorsports||Ford||262||12|
|33||12||14||Tony Stewart||Stewart-Haas Racing||Chevrolet||262||11|
|34||39||98||Josh Wise||Phil Parsons Racing||Ford||261||10|
|35||42||40||Landon Cassill||Hillman Smith Motorsports||Chevrolet||261||0|
|36||40||23||J. J. Yeley||BK Racing||Toyota||260||0|
|37||36||34||Brett Moffitt (R)||Front Row Motorsports||Ford||260||7|
|38||43||62||Brendan Gaughan||Premium Motorsports||Chevrolet||258||0|
|39||33||46||Michael Annett||HScott Motorsports||Chevrolet||257||5|
|40||41||26||Jeb Burton (R)||BK Racing||Toyota||254||4|
|41||9||48||Jimmie Johnson||Hendrick Motorsports||Chevrolet||236||4|
|42||14||19||Carl Edwards||Joe Gibbs Racing||Toyota||227||3|
|43||27||7||Alex Bowman||Tommy Baldwin Racing||Chevrolet||29||1|
|Official Kobalt 400 results|
- 18 lead changes among 9 different drivers
- 6 cautions for 28 laps
- Time of race: 2 hours, 47 minutes, 15 seconds
- Average speed: 143.677 mph (231.226 km/h)
- Kevin Harvick took home $442,415 in winnings
- Coors Light Pole Award: Jeff Gordon (27.738, 194.679 mph (313.305 km/h))
- 3M Lap Leader: Kevin Harvick (142 laps)
- American Ethanol Green Flag Restart Award: Kevin Harvick (30.537, 176.833 mph (284.585 km/h))
- Duralast Brakes "Brake in The Race" Award: Jeff Gordon
- Freescale "Wide Open": Kevin Harvick
- Ingersoll Rand Power Move: Austin Dillon, 8 positions
- MAHLE Clevite Engine Builder of the Race: Hendrick Engines, #4
- Mobil 1 Driver of the Race: Kevin Harvick (141.5 driver rating)
- Moog Steering and Suspension Problem Solver of The Race: Kevin Harvick (crew chief Rodney Childers, 0.306 seconds)
- NASCAR Sprint Cup Leader Bonus: Kevin Harvick: $30,000
- Sherwin-Williams Fastest Lap: Kyle Larson (Lap 2, 29.285, 184.397 mph (296.758 km/h))
- Sunoco Rookie of The Race: Jeb Burton
Fox Sports covered their fifteenth race at the Las Vegas Motor Speedway. Mike Joy, Larry McReynolds, and Darrell Waltrip had the call in the booth for the race. Jamie Little, Chris Neville, and Matt Yocum handled the pit road duties for the television side.
|Booth announcers||Pit reporters|
|Lap-by-lap: Mike Joy
Color-commentator: Larry McReynolds
Color commentator: Darrell Waltrip
PRN had the radio call for the race which was also simulcast on Sirius XM NASCAR Radio. Doug Rice, Mark Garrow, and Wendy Venturini called the race in the booth when the field is racing through the tri-oval. Rob Albright called the race from a billboard in turn 2 when the field went racing through turns 1 and 2 and halfway down the backstretch. Pat Patterson called the race from a billboard outside of turn 3 when the field raced through the other half of the backstretch and through turns 3 and 4. Brad Gillie, Brett McMillan, Jim Noble, and Steve Richards worked pit road for the radio side.
|Booth announcers||Turn announcers||Pit reporters|
|Lead announcer: Doug Rice
Announcer: Mark Garrow
Announcer: Wendy Venturini
|Turns 1 & 2: Rob Albright
Turns 3 & 4: Pat Patterson
Standings after the race
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- "Las Vegas Motor Speedway". NASCAR.com. NASCAR Media Group, LLC. January 3, 2013. Archived from the original on April 27, 2015. Retrieved March 2, 2015.
- "Entry list". NASCAR.com. NASCAR Media Group, LLC. March 2, 2015. Retrieved March 2, 2015.
- "First Practice Results". MRN.com. Motor Racing Network. March 6, 2015. Retrieved March 6, 2015.
- "Qualifying Results". MRN.com. Motor Racing Network. March 6, 2015. Retrieved March 6, 2015.
- "Second Practice Results". MRN.com. Motor Racing Network. March 7, 2015. Retrieved March 7, 2015.
- "Final Practice Results". MRN.com. Motor Racing Network. March 7, 2015. Retrieved March 7, 2015.
- "Kobalt 400 Results". MRN.com. Motor Racing Network. March 8, 2015. Retrieved March 9, 2015.
- "Points standings". NASCAR.com. NASCAR Media Group, LLC. March 8, 2015. Retrieved March 9, 2015.
- "Manufacturer standings". NASCAR.com. NASCAR Media Group, LLC. March 8, 2015. Retrieved March 9, 2015.
- "Raceday weather". wunderground.com. The Weather Channel, LLC. March 8, 2015. Retrieved October 1, 2015.
- Paulsen (March 9, 2015). "Overnights Up, But Low, For NASCAR From Vegas". SportsMediaWatch.com. Sports Media Watch. Retrieved March 10, 2015.
- Paulsen (March 13, 2015). "NASCAR Still Trending Up, Though Vegas Rating is Fourth-Lowest". SportsMediaWatch.com. Sports Media Watch. Retrieved March 13, 2015.
- Moody, Dave (March 4, 2015). "Moffitt Lands Front Row Motorsports Ride For Next Three Races". GodfatherMotorsports.com. Godfather Motorsports. Retrieved March 4, 2015.
- Albert, Zack (January 21, 2015). "Vickers to make '15 debut at Vegas". NASCAR.com. NASCAR Media Group, LLC. Retrieved March 4, 2015.
- Bonkowski, Jerry (March 6, 2015). "Larson, Gordon, Keselowski pace Friday Sprint Cup practice". nascartalk.nbcsports.com. NBC Sports. Retrieved March 6, 2015.
- Pistone, Pete (March 6, 2015). "Brian Vickers Back On Track". MRN.com. Motor Racing Network. Retrieved March 6, 2015.
- Pistone, Pete (March 6, 2015). "Gordon Rolls to First Vegas Pole". MRN.com. Motor Racing Network. Retrieved March 6, 2015.
- James, Brant (March 6, 2015). "Jeff Gordon wins pole for Las Vegas race". USA Today. Las Vegas: Gannett Satellite Information Network, Inc. Retrieved March 6, 2015.
- Rodgers, Joe (March 6, 2015). "Jeff Gordon smashes track record, grabs top qualifying spot at Las Vegas". SportingNews.com. Sporting News Media. Retrieved March 6, 2015.
- Spencer, Lee (March 7, 2015). "Danica Patrick wrecks Jeff Gordon in Happy Hour". Motorsport.com. Motorsport.com, Inc. Retrieved March 7, 2015.
- Bonkowski, Jerry (March 7, 2015). "Jimmie Johnson paces field in first NASCAR Sprint Cup practice Saturday". nascartalk.nbcsports.com. NBC Sports. Retrieved March 7, 2015.
- Pennell, Jay (March 7, 2015). "Pole-sitter Jeff Gordon to start in rear at Las Vegas after wreck in practice". FoxSports.com. Fox Sports Interactive Media, LLC. Retrieved March 7, 2015.
- "2015 Kobalt 400". Sprint Cup Series. Season 67. Las Vegas. March 8, 2015. Event occurs at 3:46 p.m. Fox Sports. Fox. Retrieved July 17, 2015.
- Spencer, Lee (March 8, 2015). "Atlanta winner Jimmie Johnson can't find Lady Luck in Las Vegas". Motorsport.com. Motorsport.com, Inc. Retrieved March 8, 2015.
- Pistone, Pete (March 8, 2015). "Harvick Hits Vegas Jackpot". MRN.com. Motor Racing Network. Retrieved March 8, 2015.
- Report, Staff (March 10, 2015). "Two teams penalized for Vegas infractions". NASCAR.com. NASCAR Media Group, LLC. Retrieved March 10, 2015.
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