The Porsche driver decisively took the lead of the race at the start of lap 21 following a brief safety car to retrieve debris and managed his remaining energy over the remaining six laps to secure his second win of the weekend at the Portland International Raceway.
Having been gifted Saturday’s win after a five-second penalty was handed to on-the-road winner Mitch Evans, there was no doubt of da Costa's win on Sunday despite late pressure from Robin Frijns.
