William Byron 2021 NASCAR Cup Series penalties during races Click on the Race Number to see the complete results for that race. Click on the Site to see this driver's career results at that track. View career statistics for William Byron Glossary     Post Race Site # Lap Flag Infraction Penalty 2021-01 Daytona 24 34 Unspecified Pit for repairs 2021-01 Daytona 24 66 Too many men over the wall Tail end 2021-02 Daytona (Road) 24 12 Tire violation Tail end (Uncontrolled Tire) 2021-14 Austin 24 23 Speeding on pit road Tail end 2021-32 Charlotte (Road) 24 90 Unspecified Stop & go (Missed Back Stretch Chicane)