#11-Blake Koch was fastest during opening practice at Texas with a speed of 189.347mph. The rest of the top 10: #21-Daniel Hemric, #42-Kyle Larson, #20-Erik Jones, #22-Ryan Blaney, #2-Austin Dillon, #3-Ty Dillon, #1-Elliott Sadler, #18-Christopher Bell, and #19-Matt Tifft.
38 drivers practiced during the session.
See complete results on the Texas practice 1 speeds page (pdf).
