With his ranking on the decline, Roger Federer is working with coach Paul Annacone on a trial basis. Annacone, an American, is the former coach of Pete Sampras. He also coached Marat Safin and Tim Henman, and is now the head coach of men's tennis for Britain's Lawn Tennis Association. http://sports.espn.go.com/sports/tennis/news/story?id=5411150
