In a mixed-up strategy race, Rahal Letterman Lanigan Racing driver Lundgaard dominated the opening stint but a yellow at half-distance after Romain Grosjean crashed his Andretti Autosport car set off a chain of events that meant he had to battle his way back to the head of the field.
Lundgaard passed points leader Alex Palou, up from 15th on the grid, for the victory in the final third of the race for his first win in the series.
