Mark Webber edged out Red Bull teammate Sebastian Vettel to earn himself pole position for the Korean Grand Prix.

Vettel could only qualify in second place, with McLaren's Lewis Hamilton ending the final qualifying session in third.

Championship leader Fernando Alonso will join Hamilton on the second row of the grid after he finished in fourth position for Ferrari.

Jenson Button endured a disappointing qualifying after he failed to make the final session, and he will start Sunday's race in 11th position.

Starting positions for Sunday's Korean Grand Prix:

1 Mark Webber (Red Bull)
2 Sebastian Vettel (Red Bull)
3 Lewis Hamilton (McLaren)
4 Fernando Alonso (Ferrari)
5 Kimi Raikkonen (Lotus Renualt)
6 Felipe Massa (Ferrari)
7 Romain Grosjean (Lotus Renault)
8 Nico Hulkenberg (Force India)
9 Nico Rosberg (Mercedes)
10 Michael Schumacher (Mercedes)
11 Jenson Button (McLaren)
12 Sergio Perez (Sauber)
13 Kamui Kobayashi (Sauber)
14 Paul Di Resta (Force India)
15 Pastor Maldonado (Williams)
16 Daniel Ricciardo (Toro Rosso)
17 Jean-Eric Vergne (Toro Rosso)
18 Bruno Senna (Williams)
19 Vitaly Petrov (Caterham)
20 Heikki Kovalainen (Caterham)
21 Timo Glock (Marussia)
22 Pedro de la Rosa (HRT)
23 Narain Karthikeyan (HRT)
24 Charles Pic (Marussia)