William Byron

Short at 0.89
Inter at 1.00
Long at 1.00
Super at 0.92
Road at 0.78
5/4
13
Tex
5/10
2
Kan
5/11
24
Kan
5/24
1
Cha
5/25
2
Cha
6/1
5
Nash
6/8
28
Mich
6/15
9
Mex
6/22
27
Poc
6/28
37
Atl
Success Rate
Average Finish Position
PFAE
Age: 27
More filters

Stats

Stats on this page
  • PO Points - Playoff points
  • ASP - Average starting position
  • AFP - Average finish position
  • ARP - Average running position
  • Succ% - Success rate - The percentage of races in which the driver has finished better than their expected finish based on starting position (see PFAE). We use the expected finish instead of starting position (which, I think if you asked the driver, they'd say is what they're trying to beat) because using starting position punishes drivers who qualify well: it would be impossible to succeed when starting first, for example.
  • Fin. - Races finished
  • SS - Speed score - 1000 x the ratio of the driver's 95th percentile lap to the race 95th percentile lap. A good read of a driver's top speed. [Read more]
Track Types
  • Short Tracks
    • Tracks less than 1 mile in length
    • Bristol , Dover , Dover , ISM , Iowa , Los Angeles Memorial Coliseum , Lucas Oil Indianapolis Park , Martinsville , New Hampshire , North Wilkesboro , Phoenix , Richmond , Richmond , Milwaukee Mile , The Milwaukee Mile , Rockingham , Bowman Gray Stadium
  • Intermediate Tracks
    • Tracks around 1.5 miles in length
    • Charlotte , Darlington , Gateway Motorsports Park , Homestead-Miami , Kansas , Kentucky , Las Vegas , Nashville , Texas , World Wide Technology at Gateway , Gateway
    • Note: Atlanta is classified as Intermediate through 2021
  • Long Tracks
    • Longer, non-drafting tracks
    • Auto Club , Chicagoland , Indianapolis , Michigan , Pocono
  • Super Speedways
    • Drafting tracks
    • Daytona , Talladega
    • Note: Atlanta is classified as Super Speedway from 2022 onwards
  • Road Courses
    • Autodromo Hermanos Rodriguez , Autódromo Hermanos Rodríguez , Canadian Tire Motorsport Park , Charlotte Road Course , Chicago Street Race , COTA , DAYTONA Road Course , Daytona Road Course , Indianapolis Road Course , Mid-Ohio Sports Car Course , Portland , Road America , Sonoma , Watkins Glen , EchoPark , Lime Rock Park
  • Dirt Tracks
    • Bristol Dirt , Eldora , Knoxville
Season Age Car Starts Points PO Points Wins Top 3s Top 5s Top 10s ASP AFP ARP Succ% Fin. SS Cau. Inv.
2018 20 24 Chevy 36 587 0 0 0 0 4 17.67 22.08 44.4 27 12
2019 21 24 Chevy 36 999 2 0 2 5 13 12.42 14.89 61.1 33 8
2020 22 24 Chevy 36 906 7 1 1 4 14 14.89 16.19 13.36 63.9 32 -0.81 9
2021 23 24 Chevy 36 1134 8 1 7 12 20 8.72 13.64 8.70 63.9 31 182.65 7
2022 24 24 Chevy 36 1030 14 2 4 5 11 12.50 15.56 10.21 61.1 30 62.66 2
2023 25 24 Chevy 36 1255 38 6 10 15 21 10.89 10.97 9.56 75.0 33 156.11 4
2024 26 24 Chevy 36 1130 17 3 11 13 21 9.56 12.94 10.94 66.7 32 80.15 10
2025 27 24 Chevy 18 622 12 1 5 7 10 11.00 12.78 9.16 61.1 17 81.90 1

Career Stats

Track Types
  • Short Tracks
    • Tracks less than 1 mile in length
    • Bristol , Dover , Dover , ISM , Iowa , Los Angeles Memorial Coliseum , Lucas Oil Indianapolis Park , Martinsville , New Hampshire , North Wilkesboro , Phoenix , Richmond , Richmond , Milwaukee Mile , The Milwaukee Mile , Rockingham , Bowman Gray Stadium
  • Intermediate Tracks
    • Tracks around 1.5 miles in length
    • Charlotte , Darlington , Gateway Motorsports Park , Homestead-Miami , Kansas , Kentucky , Las Vegas , Nashville , Texas , World Wide Technology at Gateway , Gateway
    • Note: Atlanta is classified as Intermediate through 2021
  • Long Tracks
    • Longer, non-drafting tracks
    • Auto Club , Chicagoland , Indianapolis , Michigan , Pocono
  • Super Speedways
    • Drafting tracks
    • Daytona , Talladega
    • Note: Atlanta is classified as Super Speedway from 2022 onwards
  • Road Courses
    • Autodromo Hermanos Rodriguez , Autódromo Hermanos Rodríguez , Canadian Tire Motorsport Park , Charlotte Road Course , Chicago Street Race , COTA , DAYTONA Road Course , Daytona Road Course , Indianapolis Road Course , Mid-Ohio Sports Car Course , Portland , Road America , Sonoma , Watkins Glen , EchoPark , Lime Rock Park
  • Dirt Tracks
    • Bristol Dirt , Eldora , Knoxville
Series Starts Points PO Points Wins Top 3s Top 5s Top 10s ASP AFP ARP Succ% Fin. SS Cau. Inv.
Truck 7 0 0 1 3 4 4 13.14 10.14 7.33 71.4 6 41.00 0
Xfinity 43 1078 0 5 13 17 27 9.37 10.44 10.99 74.4 38 53.24 8
Cup 294 7686 98 15 42 64 126 11.80 14.75 10.40 62.2 254 542.70 60

Career stats go back to 2020 for lap-by-lap statistics and 2017 for race-by-race statistics.

Splits

Terms
S: short tracks
I: intermediate tracks
L: long tracks (think Michigan, Chicago)
SS: super speedways
R: road courses
D: dirt
Season Age Car Starts AFP S S AFP I I AFP L L AFP SS SS AFP R R AFP D D AFP
2018 20 24 Chevy 36 22.08 11 22.08 11 22.08 7 22.08 4 22.08 3 22.08 0 22.08
2019 21 24 Chevy 36 14.89 11 14.89 11 14.89 7 14.89 4 14.89 3 14.89 0 14.89
2020 22 24 Chevy 36 16.19 10 16.19 14 16.19 6 16.19 4 16.19 2 16.19 0 16.19
2021 23 24 Chevy 36 13.64 9 13.64 12 13.64 3 13.64 4 13.64 7 13.64 1 13.64
2022 24 24 Chevy 36 15.56 9 15.56 11 15.56 3 15.56 6 15.56 6 15.56 1 15.56
2023 25 24 Chevy 36 10.97 9 10.97 11 10.97 3 10.97 6 10.97 6 10.97 1 10.97
2024 26 24 Chevy 36 12.94 11 12.94 11 12.94 3 12.94 6 12.94 5 12.94 0 12.94
2025 27 24 Chevy 18 12.78 3 12.78 7 12.78 2 12.78 4 12.78 2 12.78 0 12.78