okay close your eyes and hit play:
try this:
monica seles:
Is it a Women's tennis match
or
a porno movie?
All they need to do in the end is scream YES ! YES ! YES!
I used to play tennis many moons ago, and I believe this grunting/moaning/screaming all started with Monica Seles.
this HAS to be a coached technique. Gawd is it freekin obnxious (which is why they do it I bet!)

this has ruined tennis for me.