Because of heavy thunderstorms in the afternoon, the Indy Lights event had to be held after the IndyCar race and Esteban Guerrieri won over polesitter Tristan Vautier at Iowa Speedway.
Guerrieri's teammate at Sam Schmidt Motorsport Tristan Vautier was in the lead when he was handed a drive-through penalty for blocking, therefore giving away the lead to Guerrieri.
Team Moore's Gustavo Yacaman put great pressure on Guerrieri after the restart that followed the yellow flag brought out for Oliver Webb's shunt.
In the end, Guerrieri won by 0.4 seconds.
Victor Carbone completed the podium in front of Vautier and David Ostella.
Race results – Indy Lights (Iowa)
1. Esteban Guerrieri – 40m58.7488s
2. Gustavo Yacaman + 0.4005s
3. Victor Carbone + 2.2229s
4. Tristan Vautier + 3.9932s
5. David Ostella + 5.6376s
6. Jorge Goncalvez + 1 lap
7. Carlos Munoz + 1 lap
8. Chase Austin + 1 lap
9. Anders Krohn + 1 lap
10. Bryan Clauson + 2 laps
11. Mike Larrison + 6 laps
Oliver Webb – 106 laps
Sebastian Saavedra – 56 laps
Juan Pablo Garcia – 50 laps