| NASCAR Cup Series Loop Data stats for William Byron at Martinsville Speedway
Click on the Race to see results for that race. |
| Race | Start | Mid Race | Finish | High Pos. | Low Pos. | Avg. Pos. | Pass Diff. | Green Flag Passes | Green Flag Times Passed | Quality Passes | Pct. Quality Passes | Fastest Lap | Top 15 Laps | Pct. Top 15 Laps | Laps Led | Pct. Laps Led | Total Laps | DRIVER RATING |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2018-06 | 20 | 23 | 20 | 16 | 26 | 21 | -10 | 30 | 40 | 0 | 0.0 | 0 | 0 | 0.0 | 0 | 0.0 | 497 | 62.7 |
| 2018-33 | 11 | 27 | 39 | 9 | 35 | 29 | -13 | 23 | 36 | 2 | 8.7 | 2 | 40 | 8.0 | 0 | 0.0 | 364 | 52.8 |
| 2019-06 | 34 | 21 | 22 | 14 | 34 | 24 | 13 | 37 | 24 | 0 | 0.0 | 0 | 0 | 0.0 | 0 | 0.0 | 499 | 52.0 |
| 2019-33 | 11 | 4 | 2 | 2 | 11 | 5 | 11 | 26 | 15 | 24 | 92.3 | 49 | 500 | 100.0 | 0 | 0.0 | 500 | 115.5 |
| 2020-11 | 15 | 7 | 8 | 2 | 19 | 11 | 21 | 54 | 33 | 50 | 92.6 | 13 | 431 | 86.2 | 0 | 0.0 | 500 | 93.2 |
| 2020-35 | 13 | 11 | 35 | 2 | 15 | 14 | -5 | 53 | 58 | 51 | 96.2 | 7 | 439 | 100.0 | 0 | 0.0 | 439 | 73.5 |
| 2021-08 | 3 | 11 | 4 | 1 | 15 | 7 | 8 | 65 | 57 | 63 | 96.9 | 22 | 500 | 100.0 | 9 | 1.8 | 500 | 107.5 |
| 2021-35 | 11 | 3 | 5 | 2 | 14 | 5 | 10 | 42 | 32 | 42 | 100.0 | 21 | 501 | 100.0 | 0 | 0.0 | 501 | 113.1 |
| 2022-08 | 5 | 1 | 1 | 1 | 12 | 2 | 5 | 13 | 8 | 12 | 92.3 | 72 | 403 | 100.0 | 212 | 52.6 | 403 | 144.9 |
| 2022-35 | 25 | 17 | 8 | 5 | 27 | 16 | 8 | 22 | 14 | 10 | 45.5 | 8 | 233 | 46.6 | 0 | 0.0 | 500 | 76.6 |
| 2023-09 | 8 | 18 | 23 | 4 | 24 | 16 | -20 | 76 | 96 | 22 | 28.9 | 8 | 157 | 39.3 | 0 | 0.0 | 400 | 71.2 |
| 2023-35 | 16 | 20 | 13 | 5 | 25 | 17 | 11 | 60 | 49 | 16 | 26.7 | 2 | 176 | 35.3 | 0 | 0.0 | 499 | 66.4 |
| 2024-08 | 18 | 8 | 1 | 1 | 28 | 6 | 17 | 79 | 62 | 38 | 48.1 | 24 | 400 | 96.4 | 88 | 21.2 | 415 | 118.4 |
| 2024-35 | 3 | 6 | 6 | 1 | 20 | 3 | 3 | 46 | 43 | 33 | 71.7 | 38 | 498 | 99.6 | 51 | 10.2 | 500 | 120.9 |
| 2025-07 | 10 | 11 | 22 | 9 | 36 | 18 | -15 | 69 | 84 | 15 | 21.7 | 5 | 170 | 42.5 | 0 | 0.0 | 400 | 71.6 |
| 2025-35 | 1 | 1 | 1 | 1 | 8 | 2 | 1 | 19 | 18 | 18 | 94.7 | 99 | 500 | 100.0 | 304 | 60.8 | 500 | 147.7 |
| 2026-07 | 2 | 9 | 5 | 1 | 20 | 6 | 9 | 41 | 32 | 33 | 80.5 | 13 | 395 | 98.8 | 6 | 1.5 | 400 | 108.3 |
| Average Driver Rating: | 93.9 | |||||||||||||||||
Green Flag Passes: Green flag passes for position.
Pass Diff.: Difference between Green Flag Passes and Green Flag Times Passed.
Quality Passes: Number of times passing a car running in the Top 15 while under a green flag.
Fastest Lap: How many times a driver had the fastest lap of all drivers.
Driver Rating: A formula combining the following categories: Win, Finish, Top-15 Finish, Average Running Position while on Lead Lap, Average Speed Under Green, Fastest Lap, Led Most Laps, Lead-Lap Finish. Maximum: 150 points per race.