Photos: NASCAR at Indianapolis Motor Speedway, Friday July 21, 2017

INDIANAPOLIS, IN – JULY 21: Spencer Gallagher, driver of the #23 Allegiant Airlines Chevrolet, during practice for the NASCAR XFINITY Series Lilly Diabetes 250 at Indianapolis Motorspeedway on July 21, 2017 in Indianapolis, Indiana. (Photo by Sean Gardner/Getty Images)

INDIANAPOLIS, IN – JULY 21: Brennan Poole, driver of the #48 DC Solar Chevrolet, practices for the NASCAR XFINITY Series Lilly Diabetes 250 at Indianapolis Motorspeedway on July 21, 2017 in Indianapolis, Indiana. (Photo by Daniel Shirey/Getty Images)

INDIANAPOLIS, IN – JULY 21: Ryan Reed, driver of the #16 Lilly Diabetes Ford, practices for the NASCAR XFINITY Series Lilly Diabetes 250 at Indianapolis Motorspeedway on July 21, 2017 in Indianapolis, Indiana. (Photo by Daniel Shirey/Getty Images)

INDIANAPOLIS, IN – JULY 21: Elliott Sadler, driver of the #1 OneMain Financial Chevrolet, drives during practice for the NASCAR XFINITY Series Lilly Diabetes 250 at Indianapolis Motorspeedway on July 21, 2017 in Indianapolis, Indiana. (Photo by Daniel Shirey/Getty Images)

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Photos: NASCAR at Indianapolis Motor Speedway, Friday July 21, 2017