Re. the noises they make, that's become a bit of a debate. Coaches say that it's a form of breathing required for that level of exertion; Martina Navratilova says it's a tactic to cover the sound of the ball hitting the racquet, and that it should be banned.

It really annoys me when they do it. Laura Robson sounds like a cat being ****ing squashed every time she hits the ball. And one of Sharapova's screams hit 101 decibels once. Shudder.