Is Murray playing well enough to go all the way? He looked decent today after a poor first set and seemed strong even when his serve wasn't up to its usual standard.
He'll have to play better to win. No Doubt. His Serve has to be up around the 65% mark for him to have a chance at the title. I think he should beat Ferrero though and beat him quite comfortably recently. Tiredness is his only problem now. He really needs a straight sets win just for the rest time.
The good news is that Murray can definatly play better. And they always say that true champions "Play Badly and Win"