Hamilton was able to control the pace at the front of the field after a clinical start from pole position with an indomitable lights-to-flag win.
Hamilton was the first driver out for the second and final runs, and he found even more time, smashing into the 1m20s to take pole.
Signing Zhou from Formula 2 means there is no race seat for Antonio Giovinazzi, who had hoped to retain his spot for the next campaign.
Red Bull’s Max Verstappen won his third career Mexico City Grand Prix, ahead of Mercedes’ Lewis Hamilton and Red Bull teammate Sergio Perez, who became the first Mexica...
With the title fight getting tighter, Horner has admitted to enjoying making Wolff squirm, but the latter has denied feeling any pressure.
Ferrari's extra horsepower could be crucial in the team's bid to overtake McLaren for third place in the constructors' championship.
The Japanese driver was one of only two to start the race on the soft tyre after qualifying on it in Q3 on Saturday.
When the weekend began, the Mercedes drivers appeared to be in good shape, lapping nearly a second faster than Verstappen in first practise.
From second on the grid, Hamilton had a fantastic start off the line in Austin but Verstappen made a strong comeback and went on to win the race.
Sebastian Vettel's tenure at Aston Martin got off to a shaky start, with reliability issues hampering his running in pre-season testing and a disastrous first race.