#54-Darrell Wallace, Jr. was fastest during opening practice at Phoenix International Raceway with a speed of 131.569 mph. #29-Ryan Blaney was second, followed by #88-Matt Crafton, #77-German Quiroga, #13-Jeb Burton, #51-Erik Jones, #19-Tyler Reddick, #98-Johnny Sauter, #00-Cole Custer, and #9-Brennan Newberry. 29 drivers practiced during the session. See complete results on the Phoenix practice 1 speeds page (pdf).
