Is Ferrari really back?

Sebastian Vettel put the cat among the pigeons with his stunning victory in Malaysia, his first for Ferrari and first since topping the podium for Red Bull at the end of 2013. But after ending a run of eight straight victories for Mercedes stretching back to last season, Shanghai should prove the acid test for Ferrari's hopes of launching any sort of genuine challenge. Mercedes team boss Toto Wolff insists there is no need to panic, but the way Lewis Hamilton's circuitry fried under pressure from Vettel suggested the German had struck a significant psychological blow.

Rosberg needs form, fast