#51-Kyle Busch was fastest during the rain-shortened practice at Dover International Speedway on Thursday with a speed of 156.488 mph. #77-German Quiroga was second, followed by #8-John Hunter Nemechek, #54-Darrell Wallace, Jr., #17-Timothy Peters, #19-Tyler Reddick, #88-Matt Crafton, #5-John Wes Townley, #31-Ben Kennedy, and #98-Johnny Sauter. 26 drivers practiced during the session. See complete results on the Dover practice 1 speeds page (pdf).
