Making his first Xfinity start since 2012, Casey Roderick posted the fastest single lap in final practice for the U.S Cellular 250 at Iowa Speedway with a speed of 131.617 mph.
He beat Justin Allgaier (131.464 mph) by .025 seconds.
John Hunter Nemechek spun off turn four early in practice without doing any significant damage, but he flattened three tires and needed to be taken off the track on a roll back.
Making his first start in the Xfinity series, Max Tullman posted the most laps (27). He had the 17th fastest single lap of 129.635 mph, but was 19th among 20 drivers on the 10-lap chart (125.746).
Sadler posted the fastest single lap in the first practice session for the U.S Cellular 250 with a speed of 130.999 mph.
He narrowly edged Christopher Bell (130.993 mph) by .001 seconds.
Reddick (130.662), Hemric (130.646) and Allgaier (130.635) rounded out the top five.
Roderick (130.208) landed sixth on the chart.
With less than a minute remaining in this session, Reddick spun off turn four. He did minimal damage to his front splitter when he spun through the grass and back onto the pavement.
Austin Cindric (128.995) was the quickest among five drivers who ran 10 or more consecutive laps.