Ryan Blaney and Erik Jones posted identical speeds of 129.877 mph to top the first Cup practice at Bristol Motor Speedway.
The top five was completed by Kurt Busch (129.657), Kyle Busch (129.456) and Kyle Larson (129.299).
Kevin Harvick and AJ Allmendinger were involved in single-car incidents. Harvick will go to a backup car and start from the rear in the Food City 500.
Joey Logano recorded the most laps in the session with 32. He was 13th fastest.
Jones also had the best 10-lap average at 124.148 mph. Jones, Alex Bowman and Larson were the only drivers to make 10-lap runs.
Click here for the practice report.