Yamaha Racing managing director Lin Jarvis has stated everything must be 'perfect' from the first round to claim the 2015 MotoGP world title, but is 'totally confident' riders Valentino Rossi and Jorge Lorenzo are up to the task.

Yamaha was initially blown away by the sustained brilliance of Marc Marquez and Repsol Honda in the first half of 2014 and were forced to wait until the 13th round for their debut win of the campaign.

But, speaking at the team's official launch in Madrid, Jarvis pointed to the team's fine end-of-season run as an indicator of the momentum behind the Movistar outfit going into the first official test of the year.

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"I still look at last year as a successful season," said Yamaha's managing director. "We didn't win so we're not happy and we'll not be truly satisfied until we are champions again. Nevertheless the recovery in the second part of the season was very good and allowed both of our riders to the highest points scorers.

"We expect to start this year very competitively. The point of racing is you have to learn and continue to develop. In order to achieve the best results this year we have to get everything right. Everything has to be perfect from the first race onwards. That's a difficult call but I think our riders are well prepared, as are our engineers. Our team is well organised."

Having seen his riders use the off-season to totally detune from the stresses of racing in MotoGP in the past, Jarvis went on to say he has been impressed with his riders' work ethic and attitude in the winter months since Valencia.

"We have a lot of confidence in our riders. Jorge and Vale are both in great shape. From the second half of last season they both have a burning desire to win races and the championship. I'm really happy. They will push each other and collaborate together to make the M1 better. How strong we will be against Pedrosa and Marquez nobody knows. Last year Marquez had a phenomenal year and you know he is going to be super strong. But we have the riders and I'm totally confident that they will go out there and win races.

"Often in the winter season riders take a much-deserved rest. The season is hard. It's long. You're racing for nine months and at the end of the year you have a lot of tests. In the past I've seen our riders on the beach, relaxing and taking time out. You have to wake them up like a bear that comes out of hibernation in January. Sometimes it's difficult. But this year I've seen both riders. They're sharp. They're lean. They've been training throughout the winter and they're basically anxious and ready to go. In my opinion both of them are really hungry so I'm really confident."

Rossi and Lorenzo will ride in their new livery for the first time during testing at Sepang in Malaysia next week.