Iowa: Spencer Pigot, Ed Carpenter Racing Chevrolet, James Hinchcliffe, Schmidt Peterson Motorsports Honda, Takuma Sato, Rahal Letterman Lanigan Racing Honda, podium
Spencer Pigot, Ed Carpenter Racing Chevrolet, James Hinchcliffe, Schmidt Peterson Motorsports Honda, Takuma Sato, Rahal Letterman Lanigan Racing Honda, podium