McLaren driver Lewis Hamilton set the fastest time in practice on Friday for Sunday's Formula One Korean Grand Prix.
The Briton clocked a lap of 1 minute, 50.828 seconds and was 0.104 seconds faster than teammate Jenson Button on a track that was dampened by steady rain. Red Bull's Sebastian Vettel, who clinched his second straight drivers championship at last weekend's Japanese GP, was third fastest but almost two seconds off Hamilton's best.
Ferrari driver Fernando Alonso, who won here last season at the inaugural Korean GP, was fourth followed by Red Bull's Mark Webber.
Qualifying for Sunday's race will be held Saturday.