This year the number 1 ranking could go to the last match.
Nadal will enter the hard court season with a large lead over Federer and Djokovic, but will probably need it as Federer and Djokovic are much better on hard courts than Nadal.
And I doubt I'm alone in thinking that Federer almost HAS to win the Wimbledon title if he is to restrain Nadal. I mean, if he loses the final to Nadal, the lead is extended to 270 pts...this will be VERY difficult for Fed to break down if Nadal is able to post consistently excellent (SF's etc) results in the season's remaining mandatories...which I believe he can. And if I were Fed were right now, I'd be crapping a brick based on the level of play Nadal has been showing off over the last month or more.
If Federer defends his Wimbledon title, the lead is cut from 210 pts to 150 pts...not nearly as daunting.
Obviously we're kinda overlooking Nole...but I wonder if he'll suffer a burnout similar to the last few weeks of last season. Certainly that defeat to Safin, last week, had the hallmarks of a repeat, although obviously that is only one result.