Up until a two nights ago I wasnt remotely a tennis fan. That is until watching last nights match between Del Potro and Federer. But this was one of the most exciting sports events Ive seen, I tuned into the 2nd set when it looked like Federer was in firm control and then Del Potro made an amazing comeback, dragging it to 5 sets and barely squeeking out the upset victory. Federer had gone 2002 days without a US open loss. This might be the most exciting tennis match in US Open history.