-- Ross Chastain posted the fastest lap Friday as NASCAR’s O’Reilly Auto Parts Series opened its weekend at Indianapolis Motor Speedway. Chastain, a full-time NASCAR Cup Series driver competing in both races this weekend, led the field with an average speed of 168 mph. O’Reilly Auto Parts Series regular Justin Allgaier finished second in practice, followed by Carson Kvapil, Sam Mayer and Cup Series champion Chase Elliott. Chastain said he was encouraged by the speed in both his O’Reilly Series and Cup Series cars as he prepares to pull double duty at the historic track. The O’Reilly Auto Parts Series will qualify at noon Saturday.