Nico Rosberg continued his fine start to the 2016 season by comfortably leading the opening practice session of the weekend in Bahrain.
Rosberg posted a quick time during the initial stages of the session at an overcast Sakhir and consequently improved on the Soft tyres to finish with a 1:32.294.
Rosberg’s time proved to be half a second quicker than Mercedes team-mate Lewis Hamilton, as the duo finished clear of the chasing pack.
Ferrari’s Kimi Räikkönen was third quickest, 1.9s behind Rosberg, while Red Bull’s Daniel Ricciardo and Daniil Kvyat were fourth and fifth.
Nico Hülkenberg finished sixth for Force India, ahead of Toro Rosso pair Carlos Sainz Jr. and Max Verstappen, Haas’ Romain Grosjean and Williams’ Felipe Massa.
Sebastian Vettel was a low-key 11th for Ferrari as he did not run the Soft compound tyres, ahead of Valtteri Bottas and Esteban Gutiérrez.
Jenson Button ran near the front during the early stints but slipped down to 14th spot, ahead of former team-mate Kevin Magnussen.
Marcus Ericsson survived a wild moment exiting Turn 8 to take 16th position, ahead of Manor’s Pascal Wehrlein and McLaren substitute Stoffel Vandoorne.
Felipe Nasr and Jolyon Paler were 19th and 20th, with Force India development driver Alfonso Celis Jr. running through the gravel at Turn 2 en-route to 21st position.
Rio Haryanto completed the field, half a second adrift of Celis.