Out of the 4 Grand slam titles, the first one of the year, viz. the Australian Open was won by Roger Federer. The second won, i.e. the French Open was won by Rafael Nadal. The most important of all four is Wimbledon. That crown this year went to Roger Federer. So the question arises - who will win the 4th and final Grand slam of this year, viz. the US Open?

Will it be (a) Roger Federer (b) Novak Djokovich (c) Andy Murray (4) Rafael Nadal or (e) Somebody else but not any of the four above? 

Looking at the current form, Federer seems to be the US open Champion this year. What is your opinion - who do you think will the US Open this year?