McLaren Honda
McLaren and Sauber have become the first two teams to announce their driver line-ups for next week's second pre-season test at the Circuit de Barcelona-Catalunya in Spain.
Jenson Button will drive McLaren's Honda-powered MP4-30 next Thursday and Friday, before team-mate Fernando Alonso assumes driving duties for the final two days of running at his home circuit.
Brazilian rookie Felipe Nasr will commence the four day test for Sauber and will also drive the car on the final day of running, book-ending Marcus Ericsson's stint in the Sauber C34.
Sauber's decision to hand the allocated time to its race drivers means that Ferrari youngster Raffaele Marciello, who had a seat fitting at the squad's headquarters last week and is set to receive free practice outings, will have to wait for his first taste of the C34.
The second pre-season test begins at the home of the Spanish Grand Prix next Thursday and runs until Sunday.
Nine teams are set to be in attendance, though Force India will bring its 2014 car; the remaining squads have yet to confirm their driver line-ups.
