Sebastian Vettel topped the timesheet on the opening day of testing as the four-time champion, in his first outing with Ferrari, clocked one minute 22.620secs, at the Jerez track. On his maiden outing for Sauber, Marcus Ericsson finished 0.157secs down, followed by Mercedes driver Nico Rosberg, Red Bull’s Daniel Ricciardo and the Williams of Valtteri Bottas.