#88- Matt Crafton was fastest during the opening practice for Saturday’s Camping World Truck Series race at Michigan International Speedwat at 187.744mph. #29-Chase Briscoe, #98-Grant Enfinger, #16-Ryan Truex, #51-Kyle Busch, #21-Johnny Sauter, #33-Kaz Grala, #99-Darrell Wallace, Jr., #19-Austin Cindric, and #27-Ben Rhodes were the remainder of the top-10. 25 drivers practiced during the session. See complete results on the Practice 1 speeds (pdf)
