Originally Posted by Raul_SJ
I would have expected to see many players, especially juniors, emulating Roddick (whose motion seems to be fundamentally sound), but it doesn't seem to have caught on.
Well there's Brands... sorta. But it's not that easy: you need excellent shoulder flexibility, excellent hip rotation, very good timing... And I think it's also because it's not that popular among coaches; even if the motion is sound. I've seen many coaches labelling it as "dangerous", "rushed", ect. Even if Roddick didn't have more shoulder problems than your usual good servers: Sampras, Ivanišević, J. Johansson, Philippoussis on the top of my head all had shoulder problems at the end of their career. Even Rafter had surgery for it despite serving nothing but kick serves. Those were some vicious kick serves though...