Iowa: Will Power, Team Penske Chevrolet, Josef Newgarden, Team Penske Chevrolet, Simon Pagenaud, Team Penske Chevrolet, Ryan Hunter-Reay, Andretti Autosport Honda lead at the start
Will Power, Team Penske Chevrolet, Josef Newgarden, Team Penske Chevrolet, Simon Pagenaud, Team Penske Chevrolet, Ryan Hunter-Reay, Andretti Autosport Honda lead at the start