Marc Marquez made history by becoming MotoGP's youngest ever race winner in last year's Austin round.

He returns as the sport's youngest world champion and looking to build on victory during round one of the 2014 season, in Qatar.

The Losail win - by just 0.259s over Yamaha's Valentino Rossi - was all the more impressive given Marquez had missed much of pre-season testing due to a broken leg in a dirt track training accident.

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In the two-and-a-half weeks since, Marquez has been focusing on the rehabilitation of his injured leg, having been forced to compensate for the weaker leg with his right arm in Qatar.

"Since Qatar I've been focusing on getting my leg stronger and my body fitter in preparation for the Austin race this weekend," confirmed the Repsol Honda rider. "This track is one of my favourite tracks, I had a good race here last year where I have good memories of taking my first win in the MotoGP class.

"We'll have to wait and see the situation with the new rules [reduced fuel] for this year, but anyway we will be focused on our work. Thankfully the majority of hard turns are left handers at this track which is easier on my leg as I'm still not 100% fit"

MotoGP's 2013 debut at the Circuit of the Americas was dominated by Marquez.

After becoming the youngest rider to qualify on pole position, the 20-year-old promptly broke another of Freddie Spencer's 1982 records with victory in the race - during only his second premier-class appearance. The Spaniard went on to become the youngest ever MotoGP world champion and the first rookie to take the title since 'King' Kenny Roberts in 1978.

Overtaken by Marquez for the race victory in the inaugural 2013 event, team-mate Dani Pedrosa returns to Texas having finished third to Marquez and Valentino Rossi in the Qatar season opener.

"I've had a good training week at home and now I'm looking forward to get to Austin, to see the team and ride at a track I like. We had a good race there last year and we'll have to see how the bike works there this year. I hope to ride well and that we are greeted by the usual good atmosphere in America at this second visit to Austin for the Red Bull GP!"