Iowa: #5: Kyle Larson, Hendrick Motorsports, HendrickCars.com Chevrolet Camaro #99: Daniel Suarez, Trackhouse Racing, Kubota Chevrolet Camaro #12: Ryan Blaney, Team Penske, Advance Auto Parts Ford Mustang #4: Josh Berry, Stewart Haas Racing, Overstock.com Ford Mustang #24: William Byron, Hendrick Motorsports, Liberty University Chevrolet Camaro #6: Brad Keselowski, RFK Racing, King's Hawaiian - Casey's Ford Mustang #7: Corey LaJoie, Spire Motorsports, Gainbridge/Iowa Hawkeyes Chevrolet Camaro #9: Chase Elliott, Hendrick Motorsports, NAPA Auto Parts Chevrolet Camaro
#5: Kyle Larson, Hendrick Motorsports, HendrickCars.com Chevrolet Camaro #99: Daniel Suarez, Trackhouse Racing, Kubota Chevrolet Camaro #12: Ryan Blaney, Team Penske, Advance Auto Parts Ford Mustang #4: Josh Berry, Stewart Haas Racing, Overstock.com Ford Mustang #24: William Byron, Hendrick Motorsports, Liberty University Chevrolet Camaro #6: Brad Keselowski, RFK Racing, King's Hawaiian - Casey's Ford Mustang #7: Corey LaJoie, Spire Motorsports, Gainbridge/Iowa Hawkeyes Chevrolet Camaro #9: Chase Elliott, Hendrick Motorsports, NAPA Auto Parts Chevrolet Camaro