KUALA LUMPUR (AFP) Yamaha rider Jorge Lorenzo, who has a comfortable lead over his rivals, said Wednesday he hopes to win at the Malaysian Motorcycle Grand Prix but admitted the heat will pose a challenge. I am so proud and excited to see so many people out here to greet me. I hope to do well and win races, he said as fans greeted him with thunderous applause ahead of Sundays race. It was at the Sepang circuit that Lorenzo sealed his 2007 250cc title, and a fantastic display in last years race saw him rocket up the order to finish fourth having started from the back of the grid due to technical problems. Having taken 12 podiums from the 14 rounds so far including seven victories Lorenzos form this season has taken him to the brink of accomplishing a lifelong ambition. A range of results this Sunday would see him proclaimed 2010 MotoGP World Champion with three rounds to spare. The 23-year-old Lorenzo goes into round 15 at Sepang with a 69-point advantage over compatriot Dani Pedrosa the only man who can stop him from claiming the world championship. But the Repsol Honda riders participation is in serious doubt after he fractured a collarbone in a practice session crash in Japan last weekend. The 24-year-old Pedrosa was only released from hospital in Barcelona on Monday following a successful operation to insert a titanium plate into his left collarbone, and it is still unclear whether he will ride. Lorenzo, however, admitted that battling the heat in Malaysia will be his major concern. It is a pleasure to be in Malaysia. The world racing championship is very long. We must be physically and mentally fit to race. The climate here is very sunny. We have to drink a lot of water and eat rice and pasta, he said. But Lorenzo said he would prefer a dry track over wet which can cause problems. I would definitely prefer it to be dry this year. The team and I will focus in the same way we have all season, working hard from Friday and with the goal of podium or victory. We hope for the best result we can get, he said. Race organisers said that 10th place in Malaysia would be enough to give Lorenzo the season title. He needs to score just seven more points than Pedrosa in Malaysia to confirm his world title. Lorenzo has amassed 297 points with four races to go while second-ranked Pedrosa has 228 points. Pedrosa is the only rider with a mathematical possibility of derailing Lorenzos march to the title if he races Sunday. The first free practice is on Friday. After Malaysia, the riders will head to the Australian Grand Prix at Phillip Island on October 17 and then to Estoril on October 31. The championship ends on November 7 in Valencia.