Stoner admitted the punishing race schedule played its part in his lack of pace

Stoner admitted the punishing race schedule played its part in his lack of pace.

He told BBC Sport: "Everything felt pretty good, I didn't want to push too hard when it was raining so I felt comfortable sitting behind Jorge.

"But when I started to push on I felt tired. My arms were tired and I couldn't push hard enough on the brakes.

"No excuses, I'm just worn out from the last three races. I've not slept well all week after travelling from Indianapolis."

Simoncelli was able to see off a thrilling fight from Andrea Dovizioso and Ben Spies to claim fourth as Lorenzo eased to win by 7.299 seconds.

Meanwhile The Indianapolis Motor Speedway will continue to host a round of the MotoGP championship until at least 2014, series promoters Dorna said on Sunday.Nike shox shoes

There were fears after last month's race at the Brickyard that MotoGP was set to leave the home of American motor sport after agreeing deals with California's Laguna Seca and the new Circuit of the Americas in Austin, Texas.digital scales supplier

Dorna said in a statement that they had agreed a contract extension for three more years after talks with Indianapolis Motor Speedway CEO Jeff Belskus at the San Marino Grand Prix.