The third race of the Monster Energy NASCAR Cup Series season takes place at Las Vegas Motor Speedway. Below is the entry list for the Pennzoil 400.
MENCS action culminates the weekend at 3:30 pm with the Pennzoil 400 with coverage on Fox and MRN.
Entry List Pennzoil 400 at Las Vegas
| No. | Driver | Sponsor | Make | Organization |
| 00 | Landon Cassill | StarCom Racing | Chevrolet | StarCom Racing |
| 1 | Kurt Busch | Star Nursery | Chevrolet | Chip Ganassi Racing |
| 2 | Brad Keselowski | Discount Tire | Ford | Team Penske |
| 3 | Austin Dillon | Dow SILASTIC Elastomers | Chevrolet | Richard Childress Racing |
| 4 | Kevin Harvick | Jimmy John’s | Ford | Stewart-Haas Racing |
| 6 | Ryan Newman | Wyndham Rewards | Ford | Roush Fenway Racing |
| 8 | Daniel Hemric | Caterpillar | Chevrolet | Richard Childress Racing |
| 9 | Chase Elliott | Hooters | Chevrolet | Hendrick Motorsports |
| 10 | Aric Almirola | Smithfield | Ford | Stewart-Haas Racing |
| 11 | Denny Hamlin | FedEx | Toyota | Joe Gibbs Racing |
| 12 | Ryan Blaney | TBA | Ford | Team Penske |
| 13 | Ty Dillon | GEICO | Chevrolet | Germain Racing |
| 14 | Clint Bowyer | One Cure | Ford | Stewart-Haas Racing |
| 15 | Ross Chastain | Premium Motorsports | Chevrolet | Premium Motorsports |
| 17 | Ricky Stenhouse Jr. | TBA | Ford | Roush Fenway Racing |
| 18 | Kyle Busch | M&M’s Chocolate Bar | Toyota | Joe Gibbs Racing |
| 19 | Martin Truex Jr. | Bass Pro Shops | Toyota | Joe Gibbs Racing |
| 20 | Erik Jones | TBA | Toyota | Joe Gibbs Racing |
| 21 | Paul Menard | Motorcraft/Quick Lane | Ford | Wood Brothers Racing |
| 22 | Joey Logano | TBA | Ford | Team Penske |
| 24 | William Byron | Hertz | Chevrolet | Hendrick Motorsports |
| 32 | Corey LaJoie | TBA | Ford | Go Fas Racing |
| 34 | Michael McDowell | Love’s Travel Stops | Ford | Front Row Motorsports |
| 36 | Matt Tifft | Surface Sunscreen/Tunity | Ford | Front Row Motorsports |
| 37 | Chris Buescher | Natural Light Naturdays | Chevrolet | JTG Daugherty Racing |
| 38 | David Ragan | Citgard Heavy Duty Engine Oil | Ford | Front Row Motorsports |
| 41 | Daniel Suarez | Haas Automation | Ford | Stewart-Haas Racing |
| 42 | Kyle Larson | Credit One Bank | Chevrolet | Chip Ganassi Racing |
| 43 | Bubba Wallace | TBA | Chevrolet | Richard Petty Motorsports |
| 47 | Ryan Preece | Kroger | Chevrolet | JTG Daugherty Racing |
| 48 | Jimmie Johnson | Ally | Chevrolet | Hendrick Motorsports |
| 51 | Cody Ware | TBA | Chevrolet | Petty Ware Racing |
| 52 | BJ McLeod | TBA | Chevrolet | Rick Ware Racing |
| 66 | Joey Gase | Eternal Fans | Toyota | MBM Motorsports |
| 77 | Reed Sorenson | Spire Motorsports | Chevrolet | Spire Motorsports |
| 88 | Alex Bowman | Axalta | Chevrolet | Hendrick Motorsports |
| 95 | Matt DiBenedetto | Dumont JETS | Toyota | Leavine Family Racing |
| 96 | Parker Kligerman | Gaunt Brothers Racing | Toyota | Gaunt Brothers Racing |
