Since 2004, the former world number one has probably read and re-read several injury manuals after spending more time on a physiotherapist's table than on court.
While most of her rivals were locked in battle at one tournament after another, Clijsters became an expert on how to recuperate from ankle sprains, wrist surgery, hip problems and a number of other ailments.
With the daily grind of keeping her body match-fit becoming more and more unbearable, she earmarked 2007 as her final season on the tour more than 20 months ago.