US Open being the most unpredictable slam I'll probably wait till the quarters or semis before making any concrete predictions. 1st day's barely over and already Nishikori is out, he was some people's dark horse. Wawrinka could lose early or win it all, Rafa can lose early, heck look at what happened at the Australian Open, Roger could be knocked out early too. I think of all the top guys Djokovic and Murray are the most likely to go deep, not saying that they're the top 2 favourites but in terms of making it deep in slams and not getting upset they've been the most consistent in recent times. Cilic may also fly under the radar again this year but we'll see.