exit the McLaren pit box. This promoted Kovalainen into the lead, followed by Vettel but both drivers pitted at the end of lap 21, to hand the lead back to Hamilton. Vettel's sluggish pit-stop cost him track position, as he filtered out behind Rosberg. During Hamilton's stint on a second set of super-soft tyres, he was told by race engineer Phil Prew to look after his tyres as he had a comfortable gap of 15 seconds over Räikkönen. Championship leader Button, who was heavily fuelled at the start, had improved up to second by the time of his first stop on lap 25. Vettel was struggling with his car, and was passed for eighth position by Barrichello on lap 27. He then reported to his race engineer Guillaume Rocquelin that something was broken on his car. He pitted at the end of the lap from eleventh position, having lost more places, and his pit crew routinely replaced the nosecone and took a detailed look at the rear suspension. He rejoined a lap down before retiring on lap 30. Debutant Alguersuari made his first Formula One pit stop on lap 28, when running in thirteenth place. Glock also moved into the points-scoring positions at this stage of the race by using the strategy of a long 32-lap first stint. Buemi spun at turn two on lap 38, and subsequently rejoined the circuit behind his teammate Alguersuari. Hamilton was left unchallenged for the rest of the race, making his final pit stop on lap 46, and came home to win his first race as World Champion. This was his first victory since the 2008 Chinese Grand Prix, his tenth in total, and also the first time that he had won at a circuit twice, having won at nine different circuits previously. This was also the first occasion on which a KERS car had won a Grand Prix; Räikkönen (in another KERS car) came in second, setting his fastest lap on the final lap. Webber finished third, a result which moved him into second in the championship standings past Vettel. Webber also recorded the first fastest lap of his career, with a lap of 1:21.931 on lap 65. Rosberg finished fourth for the third race in succession, heading home Kovalainen, Glock, Button and Trulli rounded out the top eight point scorers. Outside the point-scoring positions were Nakajima, Barrichello (the first time that a