Seeing the Funky Flo match today, I had forgotten how good a returner he was. MTF is all over Nolerray, but there are many other good returners.
So I started to think about all those mugs/ second-tier players who have a great return of serve.
Oher than Mayer, I thought about Verdasco. He can really rip those returns! Of course h's just as error prone on the return as the rest of his game, but I think it's more a mental problem than a lack of technique.
And of course there's Giraldo! This video speaks for itself: http://www.youtube.com/watch?v=gBvesji9yOs
Can you think about other good underrated returners?
Yes. When he is OK, Mayer knows how to win against huge servers, like Isner, Raonic, and Janowicz
I think Nishikori and Melzer are also good returners, too.