Yamaha Factory Racing's Jorge Lorenzo put on a perfect performance today for the Grand Prix of San Marino, leading from the start to claim an incredible race victory at the line. The reigning World Champion was quick off the line from second position, quickly securing the front spot from Championship leader Casey Stoner into the first corner. As the Australian put the pressure on, Lorenzo responded, delivering an untouchable pace to gradually increase his lead. His flawless performance also delivered the new track record for the circuit on his 12th lap with a 1'33.906. Race winner Lorenzo was joined on the podium by legendary Yamaha rider, three time World Champion Wayne Rainey to accept the trophies. Rainey had made an emotional return to Misano this weekend for the first time in eighteen years as part of Yamaha's 50th Anniversary of Grand Prix racing. Ben Spies worked hard today, battling the hot and humid conditions with a less than perfect set up. Having started form fourth the Texan initially dropped to seventh before slowly reeling in and passing local hero Valentino Rossi. Having despatched the Italian the hunt began for fifth and sixth place riders Simoncelli and Dovizioso. Spies was able to close the gap to less than 0.2 of a second but the battling Italians made it impossible to make a clean pass, finishing in sixth position.