Sebastian Vettel has clocked the fastest time in the third qualifying session ahead of Sunday's Korean Grand Prix at Yeongam.
The German posted 1:37.881 to finished 0.137 seconds faster than his Red Bull teammate by taking full advantage on super soft tyres.
Nico Rosberg pipped his Mercedes teammate Lewis Hamilton into third, while Fernando Alonso came in fifth fastest at the Korea International Circuit.
The Lotus Renault of Romain Grosjean split the two Ferrari drivers, with Felipe Mass coming in just behind the sixth-placed Frenchman.
Kimi Raikkonen, Nico Hulkenberg and Jenson Button completed the top 10.
RESULTS IN FULL:
1. Sebastian Vettel (Red Bull)
2. Mark Webber (Red Bull)
3. Nico Rosberg (Mercedes)
4. Lewis Hamilton (Mercedes)
5. Fernando Alonso (Ferrari)
6. Romain Grosjean (Lotus Renault)
7. Felipe Massa (Ferrari)
8. Kimi Raikkonen (Lotus Renault)
9. Nico Hulkenberg (Sauber)
10. Jenson Button (McLaren)
11. Esteban Gutierrez (Sauber)
12. Pastor Maldonado (Williams)
13. Adrian Sutil (Force India)
14. Sergio Perez (McLaren)
15. Daniel Ricciardo (Toro Rosso)
16. Paul di Resta (Force India)
17. Jean-Eric Vergne (Toro Rosso)
18. Valeri Bottas (Williams)
19. Charles Pic (Caterham)
20. Giemo van der Garde (Caterham)
21. Jules Bianco (Marussia)
22. Max Chilton (Marussia)
