The entry lists for the NTT IndyCar Series doubleheader at Road America were released on Thursday (July 9).
Twenty-three drivers are entered for the REV Group Grand Prix races.
Both races will feature the same 23 drivers.
The first race of the doubleheader will take place on Saturday, July 11 at 5 p.m. ET, with TV coverage provided by NBC Sports Network. The second race will take place on Sunday, July 12 at noon ET, with TV coverage provided by NBC.