Mercedes are the latest and final team to confirm which drivers it will run during the Pirelli tyre test in Bahrain on Tuesday.
The test, which lasts three-days, is aimed at providing Pirelli with suitable data on its prototype tyres for 2014, so the Italian manufacturer can ensure it avoids a repeat of the British GP drama which unfolded when several tyres exploded.
Mercedes have confirmed that Nico Rosberg will test on all three days as Lewis Hamilton has begun his high-altitude training.
Red Bull will run third driver Sebastien Buemi, whilst Ferrari too has opted for third driver Pedro de la Rosa and Marussia’s Jules Bianchi.
Toro Rosso will run its two race drivers for 2014, Jean-Eric Vergne and rookie Daniil Kyvat.