Mercedes dominates in the first free practice of the Mexican GP.
Valtteri Bottas in 1'18''341 preceded his teammate Lewis Hamilton (+ 0''076) and Max Verstappen's Red Bulla (+ 0 '' 123).
Sixth for the first of the Ferraris with Carlos Sainz (+ 1 '' 222) ahead of Fernando Alonso's Alpine (1 '' 315) and Charles Leclerc's Red (+ 1 '' 326) which at the beginning of the session turned and damaged the rear of his car.
Sixteenth time for Antonio Giovinazzi's Alfa Romeo (+ 2 '' 003).