What happened: Ryo Hirakawa took part in Saturday practice for Haas at the Mexico City Grand Prix, marking the first competitive Saturday session of his Formula 1 career. The reserve driver stepped into the car after Haas confirmed he would replace Esteban Ocon for the remainder of the weekend.

Why it matters: The sudden promotion hands the 32-year-old an unexpected Grand Prix debut alongside Oliver Bearman as Haas navigates a weekend seat shuffle. With Ferrari junior Rafael Camara already signed to a multi-year deal for 2027, the weekend offers Hirakawa a rare premier-class showcase before the team sets its transitional plans.

What to watch: Hirakawa next heads into qualifying at Autodromo Hermanos Rodriguez to set his grid position for Sunday's Grand Prix.