#7- Justin Allgaier was fastest during opening practice at Daytona International Speedway with a speed of 193.890mph. The rest of the top 10: #2-Brad Keselowski, #42-Tyler Reddick, #9-William Byron, #23-Spencer Gallagher, #1-Elliott Sadler, #2-Austin Dillon, #3-Ty Dillon, #33-Branson Jones, and #11-Blake Koch. 43 drivers practiced during the session. See complete results on the Daytona practice 1 speeds page (pdf).
