Pennzoil 400
Las Vegas Motor Speedway — March 5, 2023
William Byron
Winner
271
Laps
36
Entries
8
Leaders
William Byron won the 2023 Pennzoil 400 at Las Vegas Motor Speedway on March 5, 2023, leading 175 of 271 laps. Kyle Larson finished second; Alex Bowman rounded out the podium. The race featured 8 different leaders.
Race Details
Date
Sunday, March 5, 2023
Track
Season
2023
Winner
Leaders
8 drivers
| Pos | Start | +/- | Driver |
|---|---|---|---|
| 1 | 8 | +7 | William Byron |
| 2 | 18 | +16 | Kyle Larson |
| 3 | — | — | Alex Bowman |
| 4 | 28 | +24 | Bubba Wallace |
| 5 | 2 | -3 | Christopher Bell |
| 6 | 20 | +14 | Austin Cindric |
| 7 | 17 | +10 | Martin Truex, Jr. |
| 8 | 25 | +17 | Justin Haley |
| 9 | 12 | +3 | Kevin Harvick |
| 10 | 15 | +5 | Daniel Suarez |
| 11 | 13 | +2 | Denny Hamlin |
| 12 | 14 | +2 | Ross Chastain |
| 13 | 3 | -10 | Ryan Blaney |
| 14 | 1 | -13 | Kyle Busch |
| 15 | 7 | -8 | Tyler Reddick |
| 16 | 19 | +3 | Aric Almirola |
| 17 | 4 | -13 | Brad Keselowski |
| 18 | 29 | +11 | A.J. Allmendinger |
| 19 | 11 | -8 | Erik Jones |
| 20 | 27 | +7 | Corey LaJoie |
| 21 | — | — | Kyle Busch |
| 22 | — | — | Tyler Reddick |
| 23 | — | — | William Byron |
| 24 | — | — | Brad Keselowski |
| 25 | — | — | Todd Gilliland |
| 26 | — | — | Corey LaJoie |
| 27 | — | — | A.J. Allmendinger |
| 28 | — | — | Justin Haley |
| 29 | — | — | Harrison Burton |
| 30 | — | — | Noah Gragson |
| 31 | — | — | Erik Jones |
| 32 | — | — | Ty Dillon |
| 33 | — | — | Austin Cindric |
| 34 | — | — | Zane Smith |
| 35 | — | — | Anthony Alfredo |
| 36 | 26 | -10 | Joey Logano |
Stage Results
| Driver | Stage 1 | Stage 2 | Stage 3 | Stage Pts |
|---|---|---|---|---|
| William Byron | 1 | 2 | — | 19 |
| Ross Chastain | 5 | 1 | — | 16 |
| Ryan Blaney | 3 | 3 | — | 16 |
| Denny Hamlin | 2 | 5 | — | 15 |
| Martin Truex, Jr. | 9 | 4 | — | 9 |
| Brad Keselowski | 4 | 12 | — | 7 |
| Christopher Bell | 7 | 10 | — | 5 |
| Kevin Harvick | 8 | 14 | — | 3 |
| Tyler Reddick | 12 | 8 | — | 3 |
| Alex Bowman | — | — | — | — |
| Kyle Busch | — | — | — | — |
| Tyler Reddick | — | — | — | — |
| William Byron | — | — | — | — |
| Brad Keselowski | — | — | — | — |
| Todd Gilliland | — | — | — | — |
| Corey LaJoie | — | — | — | — |
| A.J. Allmendinger | — | — | — | — |
| Justin Haley | — | — | — | — |
| Harrison Burton | — | — | — | — |
| Noah Gragson | — | — | — | — |
| Erik Jones | — | — | — | — |
| Ty Dillon | — | — | — | — |
| Austin Cindric | — | — | — | — |
| Zane Smith | — | — | — | — |
| Anthony Alfredo | — | — | — | — |
Model Performance
How well did the NR-Rating model predict this race? Across 24 matched drivers, the model averaged 7.6 positions off — better than the season average of 8.5. Average
| Pos | Driver | Predicted | Actual | Delta |
|---|---|---|---|---|
| 1 | William Byron | 10.7 | 1 | +9.7 |
| 2 | Kyle Larson | 12.7 | 2 | +10.7 |
| 3 | Alex Bowman | 13.5 | 3 | +10.5 |
| 4 | Bubba Wallace | 12.7 | 4 | +8.7 |
| 5 | Christopher Bell | 10.7 | 5 | +5.7 |
| 6 | Austin Cindric | 15.4 | 6 | +9.4 |
| 7 | Martin Truex, Jr. | 15.4 | 7 | +8.4 |
| 8 | Justin Haley | 19.9 | 8 | +11.9 |
| 10 | Daniel Suarez | 14.0 | 10 | +4.0 |
| 11 | Denny Hamlin | 8.2 | 11 | -2.8 |
| 12 | Ross Chastain | 13.3 | 12 | +1.3 |
| 13 | Ryan Blaney | 9.2 | 13 | -3.8 |
| 14 | Kyle Busch | 17.0 | 14 | +3.0 |
| 15 | Tyler Reddick | 6.2 | 15 | -8.8 |
| 17 | Brad Keselowski | 11.2 | 17 | -5.8 |
| 18 | A.J. Allmendinger | 18.3 | 18 | +0.3 |
| 19 | Erik Jones | 16.7 | 19 | -2.3 |
| 20 | Corey LaJoie | 22.2 | 20 | +2.2 |
| 25 | Todd Gilliland | 19.1 | 25 | -5.9 |
| 30 | Noah Gragson | 21.4 | 30 | -8.6 |
(showing top 20 finishers)
Predicted finish from NR-Rating model. Delta = predicted − actual (positive = driver beat prediction). Confidence: High Confidence = low variance (stdDev ≤ 9), Moderate = medium variance, Coinflip = high variance.
Historical Context
- William Byron: has 17 career starts at Las Vegas Motor Speedway with a 11.7 avg finish (1 win) — the model may have underweighted this track history.
- Tyler Reddick: was the model’s top pick based on 22 career starts at Las Vegas Motor Speedway with a 12.8 avg finish (2 wins), finishing P15 on the day.
- Justin Haley: was the biggest surprise, finishing P8 vs predicted P20. Track history: 18 starts, 15.3 avg finish.
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Frequently Asked Questions
Who won the 2023 Pennzoil 400?
William Byron won the 2023 Pennzoil 400 at Las Vegas Motor Speedway driving for Hendrick Motorsports.
Where was the 2023 Pennzoil 400 held?
The 2023 Pennzoil 400 was held at Las Vegas Motor Speedway on March 5, 2023.