#1 Maria Sharapova's grunt is louder than an aircraft
Maria Sharapova's on-court grunt or shriek has been officially recorded at a volume as high as 101 decibels. That is louder than a motorcycle, a lawnmower and a small aircraft landing. It is also about the same volume as an ambulance siren, and only five decibels quieter than a lion’s roar. And guess what, Sharapova is not even the loudest player! Michelle Larcher de Brito's grunt has been recorded at 109 decibels. Imagine how courageous their opponents must be to face that kind of noise!