Antonelli feeling 'tense' on cusp of world title

A tense, unwell and tired Kimi Antonelli said he will "bombard myself with melatonin" to ensure himself a full night's sleep before the Mexico City Grand Prix, where he can become Formula 1's youngest world champion.

Antonelli qualified fifth, which became fourth after Max Verstappen's grid penalty, for a race where he will guarantee himself the title with a ninth-place finish or better.