Vettel leads Red Bull 1-2 in final practice
Formula One world champion Sebastian Vettell led a Red Bull one-two on Saturday in final practice for a Korean Grand Prix he is favourite to win.
The 26-year-old runaway championship leader lapped the coastal Yeongam circuit, near Mokpo and some 400km south of Seoul, with a best time of one minute 37.881 seconds on a bright and sunny morning.
Australian teammate Mark Webber, who will have a 10-place grid penalty imposed after qualifying due to a reprimand he collected in Singapore two weeks ago for getting a post-race ride on Fernando Alonso's Ferrari, was 0.137 slower.
The Mercedes pairing of Nico Rosberg and 2008 world champion Lewis Hamilton, who was fastest in both sessions on Friday, ended up third and fourth on the timesheets.
However Hamilton, unlike the two Red Bulls, did not get a clear lap in on the super-soft tyres and was faster on the harder rubber.
Vettel leads Alonso by 60 points in the standings with six races - including Sunday's - remaining. The German is chasing his fourth win in a row as well as a hat-trick of victories in Korea.
Spaniard Alonso was fifth quickest with a lap of 1:38.486, ahead of Lotus's Romain Grosjean and Ferrari's Felipe Massa.
Finland's Kimi Raikkonen, who crashed his Lotus on Friday and had suffered back pains in Singapore, was only eighth fastest.
FINAL FREE PRACTICE SESSION TIMES
1. Sebastian Vettel (Germany) RedBull - Renault 1:37.881
2. Mark Webber (Australia) RedBull - Renault 1:38.018
3. Nico Rosberg (Germany) Mercedes 1:38.318
4. Lewis Hamilton (Britain) Mercedes 1:38.332
5. Fernando Alonso (Spain) Ferrari 1:38.486
6. Romain Grosjean (France) Lotus - Renault 1:38.701
7. Felipe Massa (Brazil) Ferrari 1:38.816
8. Kimi Raikkonen (Finland) Lotus - Renault 1:38.857
9. Nico Huelkenberg (Germany) Sauber - Ferrari 1:38.961
10. Jenson Button (Britain) McLaren 1:39.114
11. Esteban Gutierrez (Mexico) Sauber - Ferrari 1:39.128
12. Pastor Maldonado (Venezuela) Williams - Renault 1:39.196
13. Adrian Sutil (Germany) Force India - Mercedes 1:39.204
14. Sergio Perez (Mexico) McLaren 1:39.274
15. Daniel Ricciardo (Australia) Toro Rosso - Ferrari 1:39.327
16. Paul Di Resta (Britain) Force India - Mercedes 1:39.371
17. Jean-Eric Vergne (France) Toro Rosso - Ferrari 1:39.665
18. Valtteri Bottas (Finland) Williams - Renault 1:40.128
19. Charles Pic (France) Caterham - Renault 1:41.360
20. Giedo van der Garde (Netherlands) Caterham - Renault 1:41.614
21. Jules Bianchi (France) Marussia - Cosworth 1:41.646
22. Max Chilton (Britain) Marussia - Cosworth 1:42.267