"I think we are becoming extreme in both directions, " says sport psychologist Dr Victor Thompson.

BBC: From marathons to mud running

"Any sport is a pressure cooker and I don't think tennis is unique in that, " says sport psychologist Craig Mahoney of Northumbria University, who worked for the Lawn Tennis Association for seven years.

BBC: Why are tennis players so badly behaved?

"It is absolutely vital that young players are given support right from the start, " said Rebecca Symes, Sport Psychologist from British organization Sporting Success, who argues the amount of psychological support available to footballers decreases as they progress into the first team.

CNN: February 1, 2013 -- Updated 1239 GMT (2039 HKT)