#1-Elliott Sadler was fastest during opening practice at Indianapolis Motor Speedway with a speed of 166.420mph.
The rest of the top 10: #7-Justin Allgaier, #18-Kyle Busch, #20-Erik Jones, #2-Paul Menard, #9-William Byron, #42-Tyler Reddick, #48-Brennan Poole, #00-Cole Custer, and #19-Matt Tifft.
37 drivers practiced during the session.
See complete results on the Indianapolis practice 1 speeds page (pdf).
