Advantage Vettel in title race

Sebastian Vettel moved a step closer to his third world title with victory in Korea as Lewis Hamilton saw his challenge extinguished in Yeongam.

The McLaren driver entered the race 42 points off the top of the drivers' championship and needing to make up some ground to keep himself in the hunt. But the race proved a nightmare for the 27-year-old as he finished 10th and fell 62 points behind new championship leader Vettel, who overtook Fernando Alonso with his fourth win of the year.

"I think in terms of winning I think that is it for us, but I think we can still get a lot of points," he said. "We are 62 points behind now so it is going to be tough."

A rear anti-roll bar failure during his first stint ultimately proved to be Hamilton's undoing.

The problem meant an extra pit stop for fresh rubber with the resulting handling problems causing high levels of tyre degradation as he dropped back from an initial fourth place.

The problem was exacerbated when a loose piece of Astroturf became attached to his car during the closing laps, and he ended up just holding off Sergio Perez, his McLaren replacement for 2013, for the final point.

He added: "I don't see us in the fight. It's out of the question for us probably now, it's a shame as we were right there for a moment but this is motor racing. It's a sad day, but we will live."

He also took a slight dig at McLaren, by saying: "It's a day to forget, this has been a year to forget as well so I am looking forward to a fresh start next year."

There were few problems for Vettel, however, as the German took his third win in a row - and the 25th of his career - to open a six-point lead over Alonso. However, he insists there will be no complacency from him or his team, despite their current dominance.

"It's difficult to predict the next couple of races," he said. "This is the first one-two this year, I think it shows how difficult the season has been for everyone."