This statement is false, and shows ignorance on the part of the reporter:
“The WTA has addressed the issue of excessive grunting after public criticism from players and negative feedback from media and fans. Some of its top players such as Maria Sharapova, Victoria Azarenka and Serena Williams are among the worst offenders.”
Serena does NOT grunt in any manner like the other two. Sharapova and Azerenka scream as a conscious affect in a manner unfair to their opponents (IMHO).
Serena got poor treatment from the refs on this very point, in the US Open final she lost in 2011 to Sam Stoser. when Williams shouted to herself and lost a key point.
Whereas the 2 Russians create the same interference by shouting, on every point they hit.
Wow....what matches are you watching?
Serena does grunt. Very loud and very annoying.
It isn’t high pitched, but it is horrible.