MotoGP World Championship leader Maverick Vinales is confident he can halt Marc Marquez's bid for a fifth straight win in Austin, Texas this weekend.

Vinales has won the opening two races of the 2017 season in Qatar and Argentina to make a dream start to his career as a factory Yamaha rider, and the Spaniard feels he can stake his claim for a third successive premier class victory at the Circuit of the Americas on Sunday.

"For me it is a good track and I have always been really strong here and it is good for my riding style. We are really strong with acceleration and I think we can do a great result. We can be really strong but we have to work really hard and the last ten laps of the race will be really important," Vinales said.

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"Last year, it was a disaster on the last ten laps with the tyre, so we have to work in that area and especially we have to be very precise. We have to have a good pace and if we take our 100 per-cent, we know we can be there fighting for the victory."

Vinales admits Marquez will be tough to beat on the Repsol Honda but he is riding on the crest of a wave and clearly feels no challenge is too great at present.

"For sure it is impressive, four wins in a row here in America, but we know we have a good level right now," Vinales added.

"The bike is working really good and we know if we do our 100 per-cent, we can be there to try to fight for the win. At the moment, we improved the bike a lot compared to last year so we are confident we can do also a great result here."

The 22-year-old has made a terrific start with two wins on the Movistar Yamaha M1 and says his performances in Qatar and Argentina have taken him by somewhat by surprise.

"Sure, because it is two completely different tracks, but the bike was working really good at both and I was feeling really strong. We had a really good pace, all the time under control, so we are going to try to push here at the maximum, be intelligent and work hard for the race," he said.

"The last ten laps will be when the race is more difficult and especially the rear tyre is going to be difficult at the end. We know we can work really hard and we are motivated, so we can do it.

"We are going to try to go for the win because it is important to get the maximum points possible and try not to make any mistakes. It is just the third race of the season and we know that our bike is really strong in Europe, so there we can do more great races.

"I am more concentrated and working more hard: training more harder and thinking all the time about how to go more fast and be stronger. I know I can be strong."

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