JEREZ DE LA FRONTERA, Spain - Spanish rookie Marc Marquez has a chance to tumble more records when he takes to the track for the 2013 Spanish MotoGP this weekend as the youngest leader of the World championship.The 20-year-old Honda rider became the youngest to win a premier class title at the GP of the Americas in Austin, Texas, a week earlier, overtaking former double title winner Freddie Spencer's achievement from 1982.Marquez was third in Qatar in the opening race of the 2013 season so could become the youngest debutant to snare three consecutive podium finishes to top champion Jorge Lorenzo's record from 2008.LEVEL ON POINTSHe could also become the youngest to secure back-to-back premier-class pole starts and wins.Marquez said in a team statement: "I will never forget the race in Austin. I want to thank everybody for their support and congratulations. Now we return to Europe..."It's important to keep my feet on the ground and to keep my concentration. The other riders have a lot more experience than me on these circuits so we will have to work hard."Marquez is level on 41 points with compatriot Lorenzo in the championship, each with a win and a third, but Marquez is top as the most recent winner. Spaniard Dani Pedrosa is third and Italy's Valentino Rossi fourth."I'm looking forward to racing in front of Spanish fans in a MotoGP for the first time," Marquez, 2012 Moto2 champion, added. "We'll try to do our best for a good result."