#33-Matt Crafton was fastest during opening practice at Kentucky Speedway with a speed of 172.750 mph. #12-Sam Hornish was second, followed by: #44-Cole Whitt, #22-Brad Keselowski, #7-Regan Smith, ##54-Kyle Busch, #20-Brian Vickers, #99-Alex Bowman, #3-Austin Dillon, #2-Brian Scott. 40 drivers practiced during the session. See complete results on the Kentucky practice 1 speeds page (pdf) .
