[sureshs]

Originally Posted by LeeD

Serves. Ball is static, I threw it up there. More leverage, more angle, higher racketspeed near the top of the racket.
Groundies. Ball is incoming with different speeds and spins, hit by the other guy, who's usually trying to beat me. Less leverage, more control, but more torsion and more mass behind my shots.

And easier to bring the ball down for shorter folks