OT, but always a good read: From Pat Griffin, Girls, Grunts and Ground Strokes OR Ladies, Loud Noises and Lobs (Take Your Pick)
I do get the point that these noises, by men and women, could be distracting for opponents. If I close my eyes while watching Maria Sharapova and Serena Williams play a match, I could mistake it for a remake of the Texas Chain Saw Massacre. However, it is equally disconcerting to hear the men grunting like they seriously need a dose of Dulcolax.