#2-Brian Scott was fastest during opening practice at Phoenix International Raceway with a speed of 133.586mph. #3-Austin Dillon was second, followed by: #7-Regan Smith, #32-Kyle Larson, #6-Trevor Bayne, #48-Ryan Blaney, #60-Travis Pastrana, #33-Kevin Harvick, #54-Kyle Busch, and #22-Brad Keselowski. 41 drivers practiced during the session. See complete results on the Phoenix practice 1 speeds page (pdf) .
