Children for Tomorrow press day with Steffi Graf and Andre Agassi at the University Medical Center Hamburg-Eppendorf Steffi Graf (GER) during her match with Kim Clijsters (BEL) at the event A Centre Court Celebration 17 May 2009 at The All England Lawn Tennis and Croquet Club Wimbledon. Date: Sunday 17/05/2009 Credit: Tom Lovelock / AELTC (Left) Andre Agassi (USA) and (Right) Steffi Graf (GER) pictured in the club house at the Centre Court Celebration 17 May 2009 at The All England Lawn Tennis and Croquet Club Wimbledon. Date: Sunday 17/05/2009 Credit: Tom Lovelock / AELTC