Sterilgarda Yamaha's Ben Spies has said he wants to wrap up the 2009 World Superbike Championship with two wins at Portimao this weekend before moving on to MotoGP at Valencia.

The Texan is 10 points adrift of leader Noriyuki Haga, on the Xerox Ducati, and expects to battle with the Japanese star but hasn't ruled out some of the other front runners either.

“We’ve been fighting hard for race wins all year, and as a rookie on a new bike I think we’ve achieved some pretty good results. My focus is completely on going for two race wins on Sunday, I would love to be able to deliver the title for the team as they really deserve it and have worked so hard to make it possible," said the three-time ANA Champion.

"We do go well on the Portimao circuit, so I’m going to give it everything I’ve got to challenge Nori for the wins. There will be a few fast guys up there as always so it should be an exciting race day.”