Cup Series
William Byron (2023)
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2023 Statistics
| Driver Points | 4033 | Driver Points Rank | 3 |
| Races Won | 6 | Points per NASCAR Race | 33.2 |
| Races Won (%) | 16.7% | NASCAR Won (%) | 16.7% |
| Average Start | 10.9 | Average Finish Overall | 11 |
| Average Finish Last 5 | 6 | Average Finish Last 10 | 6.1 |
| Driver Races Run | 36 | Points per Driver Race Run | 33.2 |
| NASCAR Races Run | 36 | Percentage NASCAR Races Run | 100% |
| Top 5 Finishes | 15 | Races Top 5 (%) | 41.7% |
| Top 10 Finishes | 21 | Races Top 10 (%) | 58.3% |
| NASCAR Top 5 (%) | 41.7% | NASCAR Top 10 (%) | 58.3% |
| Avg Start-to-Finish | -0.1 | Best Start Position | 1 |
| Driver Laps Run | 9,064 | Driver Races Laps | 9,300 |
| Percentage Race Laps Run | 97.5% | Percentage Races Finished Laps Run | 100% |
| NASCAR Races Laps | 9,300 | Percentage NASCAR Laps Run | 97.5% |
| Did Not Finish | 3 | Did Not Finish (%) | 8.3% |
2023 Race by Race for William Byron
| Date | Event Name | Finish | Start | Laps Run | Race Laps | Pts/PP Earned | Odds | Finish Status |
| 2/5/23 | Busch Light Clash at The Coliseum | 10 | 4 | 150 | 150 | 0/0 | 12-1 | Running |
| 2/16/23 | Bluegreen Vacations Duel 1 at DAYTONA | 10 | 2 | 60 | 60 | 1/0 | Running | |
| 2/19/23 | DAYTONA 500 | 34 | 21 | 202 | 212 | 7/0 | 18-1 | Accident |
| 2/26/23 | Pala Casino 400 | 25 | 32 | 198 | 200 | 17/0 | Running | |
| 3/5/23 | Pennzoil 400 presented by Jiffy Lube | 1 | 2 | 271 | 271 | 60/7 | 49-4 | Running |
| 3/12/23 | United Rentals Work United 500 | 1 | 3 | 317 | 317 | 59/6 | 49-4 | Running |
| 3/19/23 | Ambetter Health 400 | 32 | 11 | 192 | 260 | 11/0 | 10-1 | Accident |
| 3/26/23 | EchoPark Automotive Grand Prix | 5 | 1 | 75 | 75 | 42/1 | 12-1 | Running |
| 4/2/23 | Toyota Owners 400 | 24 | 3 | 400 | 400 | 31/1 | 5-1 | Running |
| 4/9/23 | Food City Dirt Race | 13 | 10 | 250 | 250 | 25/0 | 10-1 | Running |
| 4/16/23 | NOCO 400 | 23 | 8 | 400 | 400 | 15/0 | 6-1 | Running |
| 4/23/23 | GEICO 500 | 7 | 18 | 196 | 196 | 37/0 | 14-1 | Running |
| 5/1/23 | Wurth 400 | 4 | 8 | 400 | 400 | 52/1 | 25-4 | Running |
| 5/7/23 | AdventHealth 400 | 3 | 1 | 267 | 267 | 34/0 | 11-2 | Running |
| 5/14/23 | Goodyear 400 | 1 | 4 | 295 | 295 | 56/5 | 9-1 | Running |
| 5/21/23 | NASCAR All-Star Race | 20 | 6 | 198 | 200 | 0/0 | 8-1 | Running |
| 5/29/23 | Coca-Cola 600 | 2 | 1 | 400 | 400 | 55/1 | 6-1 | Running |
| 6/4/23 | Enjoy Illinois 300 presented by TicketSmarter | 8 | 7 | 243 | 243 | 40/0 | 7-1 | Running |
| 6/11/23 | Toyota / Save Mart 350 | 14 | 26 | 110 | 110 | 30/0 | 8-1 | Running |
| 6/25/23 | Ally 400 | 6 | 5 | 300 | 300 | 46/0 | 9-1 | Running |
| 7/2/23 | Grant Park 220 | 13 | 22 | 78 | 78 | 24/0 | 44-1 | Running |
| 7/9/23 | Quaker State 400 available at Walmart | 1 | 18 | 185 | 185 | 46/5 | 14-1 | Running |
| 7/17/23 | Crayon 301 | 24 | 7 | 301 | 301 | 22/0 | 10-1 | Running |
| 7/23/23 | HighPoint.com 400 | 14 | 1 | 160 | 160 | 31/0 | 10-1 | Running |
| 7/30/23 | Cook Out 400 | 21 | 6 | 399 | 400 | 20/0 | 17-2 | Running |
| 8/6/23 | FireKeepers Casino 400 | 35 | 7 | 46 | 200 | 2/0 | 10-1 | Damage |
| 8/13/23 | Verizon 200 at the Brickyard | 14 | 39 | 82 | 82 | 23/0 | 89-4 | Running |
| 8/20/23 | Go Bowling at The Glen | 1 | 2 | 90 | 90 | 59/6 | 22-1 | Running |
| 8/26/23 | Coke Zero Sugar 400 | 8 | 27 | 163 | 163 | 35/0 | 16-1 | Running |
| 9/3/23 | Cook Out Southern 500 | 4 | 23 | 367 | 367 | 39/0 | Running | |
| 9/10/23 | Hollywood Casino 400 | 15 | 9 | 268 | 268 | 22/0 | Running | |
| 9/16/23 | Bass Pro Shops Night Race | 9 | 3 | 500 | 500 | 38/0 | 7-1 | Running |
| 9/24/23 | Autotrader EchoPark Automotive 400 | 1 | 18 | 267 | 267 | 47/5 | 8-1 | Running |
| 10/1/23 | YellaWood 500 | 2 | 8 | 188 | 188 | 53/0 | 57-4 | Running |
| 10/8/23 | Bank of America ROVAL 400 | 2 | 14 | 109 | 109 | 35/0 | 10-1 | Running |
| 10/15/23 | South Point 400 | 7 | 3 | 267 | 267 | 36/0 | 5-1 | Running |
| 10/22/23 | 4EVER 400 Presented by Mobil 1 | 4 | 7 | 267 | 267 | 49/0 | 31-4 | Running |
| 10/29/23 | Xfinity 500 | 13 | 16 | 499 | 500 | 24/0 | 38-5 | Running |
| 11/5/23 | NASCAR Cup Series Championship | 4 | 1 | 312 | 312 | 33/1 | 53-20 | Running |