Last year I correctly predicted 4 of 4 men's quarterfinal matches and this year I correctly predicted 2 of 4 women's quarterfinals. Below are my predictions for the last two men's quarterfinal matches of the 2011 US Open.
Andy Roddick USA (21) v. Rafael Nadal ESP (2). Nadal holds a 6-3 career head-to-head over all but that falls to 3-all on hard courts. They have only played once in a major, back at the 2004 US Open when an 18-year-old Nadal was schooled by the defending US Open champion in three, not very competitive sets 7 years ago. I did not predict Roddick to get this far in the tournament, but I think, now that he has, he really, really wants to get further, and he believes that he can, especially in New York. The shorter the match is, the better it is for Roddick, because if the match goes into four or five sets, Nadal's superior fitness will become more and more of a factor.
However, I do think that Roddick is ready to make another move to get deep in a major, especially here in New York where he had his greatest success. Nadal is still reeling from his unprecedented five consecutive losses to Novak Djokovic earlier this year and really had an undistinguished preparation coming into the Open. He must realize that due to the weather he will be forced to play four best-of-5 set matches in four days in order to defend his title, potentially the last three being against Roddick, then Murray and then the winner of Djokovic/Federer. Even for the indefatigable Spaniard, that might make him want to say "no mas." PREDICTION: Roddick.