From the finalist game in French open, Gaudio can control the ball perfectly. It makes me think the racket is a softer one. Or, perfect technology(consistently hit sweet spot) + stiff racket like HPS6.1 + ?? string can also generate that good control ? ? Moreover, I don't know anything about natural gut. Does natural gut, not anything else, make that sound when Gaudio hit the ball? Not crisp nor sharp.