This file picture taken on January 18, 2008 in Melbourne shows Belgian tennis player Justine Henin serving during her womens singles match against Italian opponent Francesca Schiavone at the Australian Open tennis tournament. Women's world number one Justine Henin on May 14, 2008 announced her retirement from competitive tennis, at a press conference in her native Belgium. Getty Images logo Getty Images 25 months ago

This file picture taken on January 18, 2008 in Melbourne shows Belgian tennis player Justine Henin serving during her womens singles match against Italian opponent Francesca Schiavone at the Australian Open tennis tournament. Women's world number one Justine Henin on May 14, 2008 announced her retirement from competitive tennis, at a press conference in her native Belgium.