yup, he's 20. i knew Del po' would come through some time soon. i think Juan's biggest hurdle in tennis is to be able to beat Murray and Djokovic. these two guys have a fairly conservative style that would get to Del po'. i also believe Rafa will never beat Del po' again. Juan's game is the ultimate nemesis to Rafa's non-penetrating high bouncers. Federer, however, will have good battles with Del Potro in the future.