#54-Kyle Busch was fastest during opening practice at Bristol Motor Speedway with a speed of 123.079 mph. #20-Matt Kenseth was second, followed by: #42-Kyle Larson, #5-Kevin Harvick, #33-Cale Conley, #9-Chase Elliott, #2-Brian Scott, #99-James Buescher, #3-Ty Dillon, and #7-Regan Smith. 39 drivers practiced during the session. See complete results on the Bristol practice 1 speeds page (pdf).
