Vettel favourite in Korea, despite poor practice
Sebastian Vettel came in seventh, almost two seconds behind team-mate Mark Webber, at this morning's first two practice sessions in Korea.
This has led William Hill to ease the odds of him winning slightly, from 2/1 to 9/4.
Fernando Alonso has also seen his odds drift, from 11/4 to 10/3. Despite setting the fastest time of the day, Mark Webber has also drifted to 7/2.
Hills have seen money this morning for the two McLaren drivers after two much improved drives. Hamilton is now 7/2 having been 5/1 at the start of play and Button is 10s from 12s.
The biggest move of the day has been for Robert Kubica.
The 25 year old is regarded as a future World Champion and following a very impressive fourth in an average Renault, his odds have been slashed from 25/1 to 16/1 to win in Korea on Sunday.
Vettel is priced at 13/8 to qualify fastest in session three tomorrow, with Mark Webber and Lewis Hamilton 10/3 joint second favourites.
"The Korean track has proved to be a great leveller and it could well be that the outcome of the race goes down to the best driver and not the fastest car," said Hill's spokesman Joe Crilly.
Fastest Qualifier: 13/8 Vettel; 10/3 Webber; 10/3 Hamilton; 4/1 Alonso; 12/1 Button; 16/1 Kubica; 28/1 Massa; 66/1 Rosberg; 100/1 BAR
Korean Grand Prix Outright: 9/4 Vettel; 10/3 Alonso; 7/2 Webber; 7/2 Hamilton; 10/1 Button; 16/1 Kubica; 25/1 Massa; 66/1 Rosberg; 100/1 BAR