[Rusty Backhand]

MOSCOW, Aug 29 (Reuters) - Fifth seed Marat Safin has withdrawn from the U.S. Open which starts later on Monday because the knee injury which sidelined the Russian for seven weeks earlier this year is still troubling him.

http://go.reuters.co.uk/newsArticle.jhtml?type=tennisNews&storyID=9495430&section=news&src=rss/uk/tennisNews