With Nalbandian, Blake, Davydenko, Ljubicic, Johansson and Roddick out already, it's hard to go past Nadal and Hewitt as possibilities to win. Their court movement and endurance has often seen them winning 5 setters without any dip in performance, something which has always challenged Federer.

Baghdatis IS still in. He actually just beat Grosjean and moves on to play Andy Murray, the man who dominated Andy Roddick. Both Baghdatis and Murray are in with a slight chance, I reckon.

Realistically, I think Hewitt is the one that has the best chance of doing it this year. Not on grounds of ability but because he's had a pretty relaxing run in the first 3 rounds. With David Ferrer as his 4th round opponent, I think Hewitt may have an edge in the coming quarter finals and semi finals by being better rested and less injury prone.

Personally, I'd rather see Nadal. There's nothing more gratifying than seeing the world number 2 beat the world number 1. If Nadal can do it on grass as well as clay..then on the hard courts of the US Open or Australian, there wouldn't be any doubt that Nadal deserves the title of best in the world more than Federer does.

If you'd rather put money on some unseeded players, I say either Mirnyi or Murray.