Karlovic. All the others had groundstrokes. Karlovic's serve has got him into the top 15, when the rest of his game is outside the top 100. Goran is a clear second, then you could group Sampras, Stich, Becker, Roddick etc as similar in standard.
"I am free of all prejudices. I hate everyone equally." W C Fields
Dunlop Aerogel 200