[Shanghai, SF] del Potro upsets Nadal in awesome display of power
If there's anyone who understands what Nadal went through when he took 7 months off the tour, it has to be Juan Martin del Potro. At the end of 2009, del Potro looked like he might be the man to crack the triumvirate of Federer, Nadal, and Djokovic. He had won the US Open by