Angelique Kerber (Grunt-O-Meter Score 8): Sounds like she's getting ready to throw up every time she grunts 4. Caroline Wozniacki (Grunt-O-Meter Score 8): Her unique two-part grunt sets her apart ...

“There’s a reason behind it and a name for it: Valsalva technique. The grunting is often the sound which is made after a gym-goer holds their breath briefly for a particularly strenuous move.

Host broadcaster Channel 7 has what it calls a ``Whoo! Meter,'' which registered the sound at 91.4 decibels on Tuesday. Grunting in women's tennis has been an issue as far back as the heyday of ...