#3-Ty Dillon was fastest during opening practice at Charlotte Motor Speedway on Thursday. During what is being considered a test day for all of the teams, Dillon led the way with a speed of 179.283 mph. #31-James Buescher was second, followed by: #51-Kyle Busch, #19-Ross Chastain, #29-Ryan Blaney, #4-Jeb Burton, #2-Brad Keselowski, #98-Johnny Sauter, #17-Timothy Peters, #88-Matt Crafton. See complete results on the Charlotte practice 1 speeds page (pdf) .
