Hamilton beats Button in morning and Rosberg in afternoon
Wiring problem forces Sebastian Vettel out of second session
Lewis Hamilton finished top of both practice sessions in Barcelona on Friday as he warmed up for Sunday’s Spanish Grand Prix.
In the morning he beat second-placed Jenson Button by almost a second. He returned in the afternoon to finish nearly half a second ahead of his most serious rival this season, his Mercedes team-mate, Nico Rosberg.