Mid-Ohio: Takuma Sato, Rahal Letterman Lanigan Racing Honda, Sébastien Bourdais, Dale Coyne Racing with Vasser-Sullivan Honda, Spencer Pigot, Ed Carpenter Racing Chevrolet
Takuma Sato, Rahal Letterman Lanigan Racing Honda, Sébastien Bourdais, Dale Coyne Racing with Vasser-Sullivan Honda, Spencer Pigot, Ed Carpenter Racing Chevrolet