I don't think the US has any great new players in the pipeline, do you? On the men's side, we have Isner (who I absolutely love watching), and maybe Ryan Harrison, actually from the Bahamas, who has been touted by USTA for years but with his anemic serve isn't really much of a threat - then there are the aging Fish, Roddick, and Williams Sisters. After these stalwarts retire in a year or two - who's next? Don't give me surfer-dude Querry, or "flash in the pan" Oudin. For some reason, U.S. tennis players aren't trained as well, or don't care as much, as the Spanish, French or even the Serbians.