Portland: #5: Pato O’Ward, Arrow McLaren SP Chevrolet, #15: Graham Rahal, Rahal Letterman Lanigan Racing Honda, #7: Felix Rosenqvist, Arrow McLaren SP Chevrolet
#5: Pato O’Ward, Arrow McLaren SP Chevrolet, #15: Graham Rahal, Rahal Letterman Lanigan Racing Honda, #7: Felix Rosenqvist, Arrow McLaren SP Chevrolet