I think the upcoming Olympics have changed how players are approaching the year in tennis. While Grand SLams are so important, Gold Medals are something most players normally can only try for 2 or 3 times. Roger has won it all. He's won every slam, he's won more slams, but he hasn't won an Individual Gold Medal and this is his last shot. He's announced how much he wants that for quite a while. I think that's why Roger has altered his schedule this year and didn't seem to care about playing hard against Novak in Rome, only to play Rafa in the final. Djokovic openly wept when he lost to Rafa in 2008, he is so popular in Serbia and probably has a ton of pressure to bring home the gold after his awesome last year. It was his part in the Davis Cup win that was the start of his awesome run last year. He was tearful after his Davis Cup surrender to DelPo. Novak didn't seem to put a huge amount of effort into Rome, and may have been able to win if he'd have put forth more effort. To me, in Rome, he looked like a man that was conserving energy as well as not risk injury. Nadal, well he's won the Gold, and I wonder if he's going to hope that he can work the slams since he's not as pressured to win the Gold. Murray, god knows he would love to win, but he's seems to have had a fairly bad year since losing to Djokovic in AO. He may be injured. I do wonder if some dark horses could be Raonic and Isner given their serving, and if that can get them further than they would have been otherwise.