IndyCar's drivers stood in a silent tribute to Anthoine Hubert after the Frenchman died in a crash during Saturday's Formula 2 feature race at Spa-Francorchamps.
Hubert succumbed to his injuries after a collision with Juan Manuel Correa in Belgium, and Formula 2's racing for the weekend has been cancelled.
Condolences were paid across the world of motorsport, as a young racer was mourned.
IndyCar's drivers offered their own tribute after the third practice session in Portland, lining up on the start-finish line for a moment of silence.
NBC commentator Leigh Diffey paid a warm tribute to Hubert from the commentary box in Portland.