If MotoGP rookie Marc Marquez is feeling the pressure ahead of this weekend's Valencia title showdown, he isn't showing it.

The 20-year-old Repsol Honda star, who holds a 13-point advantage over Yamaha's reigning double champion Jorge Lorenzo, was his usual laid back self during Thursday's pre-event press conference.

"I feel good and ready for the most important weekend of the season and maybe my career," he said. "In 2010 I also had an important weekend here for the 125 [title]. MotoGP is always different but anyway we will try to do our best as always."

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If Marquez can seal the deal on Sunday he will become the first rookie champion since 1978 and the youngest ever in the history of the premier-class. It is a situation Marquez claims he never expected to find himself in.

"This was where I did my first press conference as a MotoGP rider just one year ago. I was so nervous. At that time I couldn't imagine this situation, to be here at Valencia leading the championship - fighting for the championship with Jorge.

"The situation is much better than we expected, because this year was just try to learn, try to improve every race. We couldn't imagine leading the championship into the last race. We will see how we can finish the championship."

Relaxed or not, the reality is that Marquez and Honda have seen two chances to wrap-up the title before Valencia slip away - Lorenzo winning both events, which included disqualification for Marquez in Australia.

"Jorge has been very strong in the last races," said Marquez. "He has a lot of experience in MotoGP. You can feel that when you ride with him. We will try to do our best, but for sure Jorge will put some pressure.

"The most important thing is that we need to do our race, our job and then we will see. Sure we will try to finish in the top four, but for me the target is the same as other races: Try to concentrate on Friday and Saturday then see what the situation is after warm-up on Sunday."

Practice at Valencia gets underway on Friday morning.