#33-Matt Crafton was fastest during opening practice at Kentucky Speedway with a speed of 173.740mph. The session was shortened due to rain. #3-Austin Dillon was second, followed by: #2- Brian Scott, #20-Brian Vickers, #32-Kyle Larson, #31-Justin Allgaier, #12-Sam Hornish, Jr., #77-Parker Kligerman, #22-Ryan Blaney, and #18-Joey Coulter. 41 drivers practiced during the session. See complete results on the Kentucky practice 1 speeds page (pdf) .
