#22-Brad Keselowski was fastest during opening practice at Watkins Glen International with a speed of 122.291mph. #33-Paul Menard was second, followed by: #09-Marcos Ambrose, #54-Kyle Busch, #20-Matt Kenseth, #3-Ty Dillon, #12-Joey Logano, #9-Chase Elliott, #2-Brian Scott, and #62-Brendan Gaughan. 35 drivers practiced during the session. See complete results on the Watkins Glen practice 1 speeds page (pdf).
