Formula 1 returned to the Las Vegas strip on Friday morning (Thursday night local time), with cars taking to the track in tricky conditions to start the weekend.
A number of drivers ventured off the track and into run-off areas on the cold, dusty track as they began the process of cleaning off the worst of the dust, but none made contact with the walls around the street circuit.
Lewis Hamilton and George Russell dominated the timing sheets after a set of brilliant laps late in the session, with the seven-time world champion leading his team-mate by nearly four tenths of a second and almost a full second ahead of anyone not driving a Mercedes – including Max Verstappen, down in fifth behind title rival Lando Norris.
Norris was the third fastest car on the track, followed by Charles Leclerc, as Ferrari and McLaren continue to duke it out with Red Bull for the constructors' title.
Yes, FP2 is due to take place later on Friday, with the championship protagonists getting their cars tuned into the track. The session is due to start at 6am GMT.