melzer is a good player with a big lefty topspin forehand. he also returns well.
his main issue: age
he has to be pushing 33 by now.
not everybody that old can deal with the top players in the game.
Not sure if Melzer's main issue is age though. I mean look at Federer, Ferrer and Lopez - all 33 and still playing well. Although Lopez has to go through much tougher draws than Federer and Ferrer due to lower ranking.
Anyway, Fognini is next for Andy. I must say, not a fan of Fog at all especially all those antics he had to throw against Andy at that notorious DC match this year and made it so difficult for Andy. If I am on the right chain of thought, then Andy would be and should be ready (and keen)for this 2nd encounter of the year. The main focus though is to get the title and not focus too much on the revenge factor. So Andy must be wise to keep things in perspective and not get caught in the moment. Fog will try to distract Andy as a tactic but Andy must keep things on course. Eye on the title.