#98-Aric Almirola was fastest during opening practice at Atlanta Motor Speedway with a speed of 181.372mph.
The rest of the top 10:
#18-Kyle Busch, #41-Kevin Harvick, #22-Brad Keselowski, #23-Spencer Gallagher, #42-Kyle Larson, #0-Cole Custer, #19-Matt Tifft, #2-Austin Dillon, and #16-Ryan Reed.
35 drivers practiced during the session.
See complete results on the Atlanta practice 1 speeds page (pdf).
