Jorge Lorenzo had to concede the best man won after team-mate Valentino Rossi rose to the occasion to win on home soil at the San Marino MotoGP.

Lorenzo stormed into the lead from pole but soon came under attack from Rossi and Repsol Honda's Marc Marquez, dropping back to third place and losing the tow of the leading pair.

A mistake by Marquez promoted Lorenzo to second place but he was unable to make an impression on Rossi, who managed a lead of around 2.3 seconds as he went on to seal a popular triumph in front of his home crowd.

Lorenzo revealed he had opted to run with the same hard front tyre from 2013 in contrast to his rivals and although he had grip throughout the race, the traction was not as strong as he had enjoyed during practice.

"I'm very happy to see that Yamahas are first and second, but for my part I am disappointed because I expected to fight for a win," he said.

"The Yamaha had very good pace all weekend but even with no problem with the front it would be difficult to win because Valentino was very fast, but maybe I could fight with him.

"We used the same tyre as last year but the other riders used a different one. Luckily the grip was constant but not the same as practice," he added.

"I tried to stay with Valentino but he rode very well this weekend and deserved his win. Congratulations to him.

"The bike is good but for one reason or another we couldn't make a win in Italy, but we were very close. Finally everything was good, especially with balance, and we will try in Aragon."