#12-Ryan Blaney was fastest during opening practice at Charlotte Motor Speedway with a speed of 182.834mph.
The rest of the top 10: #48-Brennan Poole, #20-Denny Hamlin, #22-Brad Keselowski, #2-Austin Dillon, #41-Kevin harvick, #00-Cole Custer, #7-Justin Allgiaer, #9-William Byron, and #18-Christopher Bell.
All 42 drivers practiced during the session.
See complete results on the Charlotte practice 1 speeds page (pdf).
