Red Bull's Sebastian Vettel has stolen the early advantage over championship rival Fernando Alonso by finishing fastest in the first practice session ahead of Sunday's Indian Grand Prix.
Vettel goes into the race with a six-point lead over Ferrari's Alonso.
The two-time world champion finished three tenths of a second ahead of McLaren's Jenson Button, with Alonso third fastest.
McLaren's Lewis Hamilton was fourth-quickest ahead of Red Bull's Mark Webber, with Force India's Paul di Resta in 12th place.
Indian Grand Prix first practice standings:
1. Sebastian Vettel (Red Bull)
2. Jenson Button (McLaren)
3. Fernando Alonso (Ferrari)
4. Lewis Hamilton (McLaren)
5. Mark Webber (Red Bull)
6. Nico Rosberg (Mercedes)
7. Felipe Massa (Ferrari)
8. Michael Schumacher (Mercedes)
9. Daniel Ricciardo (Toro Rosso)
10. Kimi Raikkonen (Lotus Renault)
11. Valtteri Bottas (Williams)
12. Paul Di Resta (Force India)
13. Kamui Kobayashi (Sauber)
14. Nico Hulkenberg (Force India)
15. Romain Grosjean (Lotus Renault)
16. Pastor Maldonado (Williams)
17. Jean-Eric Vergne (Toro Rosso)
18. Vitaly Petrov (Caterham)
19. Giedo van der Garde (Caterham)
20. Esteban Gutierrez (Sauber)
21. Charles Pic (Marussia)
22. Narain Karthikeyan (HRT)
23. Timo Glock (Marussia)
24. Pedro de la Rosa (HRT)
