Formula 1: Sebastian Vettel wins to lead championship 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. 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 as the resulting handling problems caused high levels of tyre degradation and 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. Hamilton admits his chances of departing McLaren for Mercedes as a world champion are finished. He said: "In terms of winning I think that is it for us, but I think we can still get a lot of points. We are 62 points behind now so it is going to be tough. 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. I feel a little bit exhausted. It was a tough race, I tried my best. We had another problem at the back of the car, I don't know how. But the team said it was safe to drive and I kept pushing as much as I could, but the balance was changing from corner to corner. The car was moving all the time, even on the straight. 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. Vettel now tops the standings for the first time since May and given the pace of Red Bull here and in Japan last weekend, he is the clear favourite to emerge as champion. The key to victory was his start, as he got away well from the dirty side of the grid to overtake pole-sitting team-mate Mark Webber into turn one and secure a lead he was never to relinquish. There were concerns over the wear rate of his right-front tyre during the closing stages, but he ultimately cruised to the win ahead of Webber as Red Bull took the first one-two finish by any team this season. 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," said Vettel. This is the first one-two this year. I think it shows how difficult the season has been for everyone. Ferrari were extremely competitive today, probably more competitive than everyone expected in the race. Both of them, - Felipe (Massa) I think was only a little bit off Fernando - were quick. We know their car works in all circumstances, so we have to stay on top of our game, focus on ourselves and do what we can. Third-placed Alonso had led the championship since winning at Valencia in June, but the Spaniard was keen to remain positive in spite of losing the lead in the standings.