Tough one. If Nalbi is playing in the same fashion as 2nd round, he will lose. But you never know with him, he might as well pull out all the goods in this match. But he hasn't shown his HC-skills yet. If he is in topform, he will reach his level in the matches where it is needed. So I think he will win this one. Stepanek also has a nice game for him. Not too much long rallies so not too many mistakes, nice target at the net, etc.
Wimb, it`s just a joke. Fed doesnt have RG and Andre does, what`s not to understand. Ofcorse Fed is the greatest of all time IMO, but there are still some things he hasn`t achieved yet (or will he ever thinking of RG title).