How impressive was DelPotro's performance!!! Such massive hitting off the ground from both sides: Flat, heavy, and supremely penetrating. Enough to bewilder the 'all great' :neutral: Federer. I think DelPo is the male version of Lindsay Davenport. Not the best mover, but when given a little time produces the cleanest heaviest hitting on the tour. I didn't think this before this USO; he has improved so quickly. Just think how much better he can get. The opposite style of Andy Murray, I'm sure you can tell which one I find more enjoyable to watch.