By Lisa Lewis

Marc Marquez took victory aboard his CatalunyaCaixa Repsol Suter for round ten of the Moto2 championship at Indianapolis on Sunday, increasing his lead in the championship to 39 points.

Last years race winner Marquez had pulled out a significant lead with 20 laps remaining and continued to churn out fast laps one after the other to win by a 5.855 second margin.

The Spaniard was running the new chassis and swing arm tested in Portimao along with fellow tester Luthi and Terol and said in Parc Ferme that he was surprised to be out on his own as he expected Espargaro to be up with him but that he was "very happy as the races in Moto2 are so difficult".

Pol Espargaro could not manage to catch his fellow Spaniard and had to settle for the second spot on the podium for the Pons 40 HP Tuenti (Kalex) team, saying in the press conference the bike was "difficult to ride" and there was "problems on the front" with chatter.

A visibly delighted Julian Simon crossed the line third for Blusens Avintia (Suter). Simon said of his podium "I'm very happy... I hope to stay here in this place for the second part of the championship".

Mika Kallio was fourth across the stripe of bricks while his team mate Scott Redding spent much of the race in the lower end of the top ten with a late push seeing him move up to sixth. Splitting the two Marc VDS men was Tom Luthi's Interwetten-Paddock Suter in fifth.

Early leader Dominique Aegerter finished seventh for Technomag-CIP while Simone Corsi was eighth for the Came IodaRacing project.

Mugello race winner Andrea Iannone had been in the mix early on for Speed Master but dropped down to ninth by the chequered flag. Claudio Corti was tenth for the Italtrans team.

Tito Rabat finished eleventh for the Pons 40 HP Tuenti team while Johann Zarco crossed the line in twelfth for JIR.

Nico Terol of Mapfre Aspar was 13th and Australian QMMF rider Ant West 14th. Ricard Cardus completed the points finishers in 15th while Tech3 rider Bradley Smith was next across the stripe in 16th after struggling to be competitive all weekend.

Smith's team mate Xavier Simeon took out Forward racing's Alex De Angelis with seven laps to go, resulting in some angry shoving from the San Marino rider.

British rider Gino Rea finished the race in 20th for Federal Oil Gresini.

Moto2 continues next week when the championship moves on to Brno in the Czech Republic.