Photos: NASCAR at Bristol Motor Speedway, Fri., Apr. 21, 2017

BRISTOL, TN - APRIL 21: Detail photo of a sticker on the car of Dale Earnhardt Jr., driver of the #88 Nationwide Chevrolet, during practice for the Monster Energy NASCAR Cup Series Food City 500 at Bristol Motor Speedway on April 21, 2017 in Bristol, Tennessee. (Photo by Brian Lawdermilk/Getty Images)