I think the USO is pretty much going to show us everything we need to know. If Novak falters there, then there is serious blood in the water and the sharks are going to go into a frenzy, and we could start seeing some serious shifts amongst the rankings, as it could lead to greater motivation, but also better chances at winning key events. Now, if Novak turns up and routines everyone, barring the odd match that he is known to throw in every slam, then ultimately while the boat had been rocked, it still stayed on course. Novak ends the year the world number one, 13 slams, and majority of the people will look at W and Olympics as a blip, we all know how quickly people change their opinions from tournament to tournament.