2021 United States Grand Prix

[6] From this race onward, any practice times set during waved yellow flags would be deleted.

[11] For this weekend exclusively, Honda-powered teams Red Bull Racing and Scuderia AlphaTauri raced with sponsorship by Honda's American brand Acura, replacing the engine manufacturer's logos in their cars' respective liveries.

[15] The second session started at 15:00 local time, also on Friday, and ended with Sergio Pérez fastest ahead of Lando Norris and Hamilton.

There were very stiff winds and high temperatures catching the drivers out throughout the session and Verstappen and Hamilton both had quicker lap times deleted for exceeding track limits on Turns 19 and 9, respectively, Pérez was once again the fastest driver, ahead of Carlos Sainz Jr. for Ferrari and Verstappen.

[clarification needed][18] Before qualifying, Red Bull made alterations to the rear wings of their cars after a crack was found on one of them.

[19] Notes The race started at 14:00 local time (UTC−05:00) on Sunday, October 24, and was run over fifty-six laps.

Aerial view of Circuit of the Americas .
Verstappen, the race winner, during Friday's free practice.