Originally Posted by Nellie
I like to look at the shorter/smaller players to see how they are generating pace. I feel that as you get taller/bigger, you can get away with some odd technique. I really like watching Ferrer and Nishikori play. My former favorite player to watch was Henin (5'4" of hitting power and movement).
Even Nishikori himself packs quite a punch for his size
I agree with the Ferrer, Kohlschreiber, and Simon kind of recommendation. They lack the unique characteristics that the top boys have, so ultimately it's almost purely technical regarding their performance. Consistency wins at the lower level. Federer is amazingly strong to generate so much pace on an inside out forehand from subpar preparation and time. His use of the wrist is ridiculous dexterity.