Mercedes driver Lewis Hamilton has recorded the quickest time in the opening practice session ahead of Sunday's Bahrain Grand Prix.
Hamilton, who won last week's Malaysian Grand Prix, had teammate Nico Rosberg finish behind him in second position with Ferrari's Fernando Alonso in third.
Nico Hulkenberg registered an impressive time in the Force India to finish in fourth place while Jenson Button started preparations for his 250th Grand Prix by ending the session in fifth.
Kimi Raikkonen was sixth, Kevin Magnussen was seventh, while reigning world champion Sebastian Vettel finished in 10th.
Full standings
1. Lewis Hamilton (Mercedes)
2. Nico Rosberg (Mercedes)
3. Fernando Alonso (Ferrari)
4. Nico Hulkenberg (Force India)
5. Jenson Button (McLaren)
6. Kimi Raikkonen (Ferrari)
7. Kevin Magnussen (McLaren)
8. Daniil Kvyat (Toro Rosso)
9. Sergio Perez (Force India)
10. Sebastian Vettel (Red Bull)
11. Felipe Massa (Williams)
12. Jean-Eric Vergne (Toro Rosso)
13. Felipe Nasr (Williams)
14. Daniel Ricciardo (Red Bull)
15. Adrian Sutil (Sauber)
16. Pastor Maldonado (Williams)
17. Jules Bianchi (Marussia)
18. Giedo van der Garde (Sauber)
19. Romain Grosjean (Lotus)
20. Max Chilton (Marussia)
21. Robin Frijns (Caterham)
22. Marcus Ericsson (Caterham)
