F1 testing: Does Nico Rosberg have edge over Lewis Hamilton?

BBC Sport's Lee McKenzie and Ben Edwards look back at the final day of testing in Barcelona as Nico Rosberg completed 148 laps at the Circuit de Catalunya.

F1 commentator Edwards feels that having all those laps under his belt will help Rosberg when it comes to a title fight with team-mate Lewis Hamilton.

Williams' Valtteri Bottas was fastest on the final day ahead of the Ferrari of Sebastian Vettel, while McLaren's Jenson Button only managed 30 laps.

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