#3-Austin Dillon was fastest during the only practice at Dover International Speedway with a speed of 152.433mph. #99-Alex Bowman was second, followed by: #20-Brian Vickers, #2-Brian Scott, #6-Trevor Bayne, #7-Regan Smith, #77-Parker Kligerman, #54-Kyle Busch, #18-Matt Kenseth, and #5-Kasey Kahne. All 40 drivers practiced during the session. See complete results on the Dover practice 1 speeds page (pdf) .
