![Steffi Graf (L) and her son Jaden Agassi watch Andre Agassi play Roger Federer of Switzerland, in their quarter final match at the 2004 U.S. Open in New York, September 9, 2004. Steffi Graf (L) and her son Jaden Agassi watch Andre Agassi play Roger Federer of Switzerland, in their quarter final match at the 2004 U.S. Open in New York, September 9, 2004.](https://c8.alamy.com/comp/2D3WX60/steffi-graf-l-and-her-son-jaden-agassi-watch-andre-agassi-play-roger-federer-of-switzerland-in-their-quarter-final-match-at-the-2004-us-open-in-new-york-september-9-2004-federer-defeated-agassi-6-3-2-6-7-5-3-6-6-3-reutersmike-segar-pj-2D3WX60.jpg)
Steffi Graf (L) and her son Jaden Agassi watch Andre Agassi play Roger Federer of Switzerland, in their quarter final match at the 2004 U.S. Open in New York, September 9, 2004.
![Australian Open champion Martina Hingis of Switzerland juggles balls as Steffi Graf of Germany has medical time-out during the third set in their quarterfinals in the one million dollar Pan Pacific Open Australian Open champion Martina Hingis of Switzerland juggles balls as Steffi Graf of Germany has medical time-out during the third set in their quarterfinals in the one million dollar Pan Pacific Open](https://c8.alamy.com/comp/2D5597E/australian-open-champion-martina-hingis-of-switzerland-juggles-balls-as-steffi-graf-of-germany-has-medical-time-out-during-the-third-set-in-their-quarterfinals-in-the-one-million-dollar-pan-pacific-open-tennis-in-tokyo-february-5-hingis-beat-graf-3-6-6-2-6-4-to-advance-into-semifinals-kmdlfms-2D5597E.jpg)
Australian Open champion Martina Hingis of Switzerland juggles balls as Steffi Graf of Germany has medical time-out during the third set in their quarterfinals in the one million dollar Pan Pacific Open
![Former German tennis champion Graf watches her husband Agassi play against Switzerland's Federer at Australian Open in Melbourne. Former German tennis champion Steffi Graf watches her husband Andre Agassi of the U.S. Former German tennis champion Graf watches her husband Agassi play against Switzerland's Federer at Australian Open in Melbourne. Former German tennis champion Steffi Graf watches her husband Andre Agassi of the U.S.](https://c8.alamy.com/comp/2D4KA1G/former-german-tennis-champion-graf-watches-her-husband-agassi-play-against-switzerlands-federer-at-australian-open-in-melbourne-former-german-tennis-champion-steffi-graf-watches-her-husband-andre-agassi-of-the-us-play-against-top-seed-roger-federer-of-switzerland-at-the-2005-australian-open-tennis-in-melbourne-january-25-2005-federer-demolished-andre-agassi-6-3-6-4-6-4-on-tuesday-to-reach-the-semi-finals-of-the-australian-open-with-a-performance-sure-to-strike-fear-into-his-2D4KA1G.jpg)
Former German tennis champion Graf watches her husband Agassi play against Switzerland's Federer at Australian Open in Melbourne. Former German tennis champion Steffi Graf watches her husband Andre Agassi of the U.S.
![Former tennis players Andre Agassi and Steffi Graf sit on Centre Court for the men's quarter-final tennis match between Roger Federer of Switzerland and Mikhail Youzhny of Russia at the Wimbledon tennis Former tennis players Andre Agassi and Steffi Graf sit on Centre Court for the men's quarter-final tennis match between Roger Federer of Switzerland and Mikhail Youzhny of Russia at the Wimbledon tennis](https://c8.alamy.com/comp/2CYKM9N/former-tennis-players-andre-agassi-and-steffi-graf-sit-on-centre-court-for-the-mens-quarter-final-tennis-match-between-roger-federer-of-switzerland-and-mikhail-youzhny-of-russia-at-the-wimbledon-tennis-championships-in-london-july-4-2012-reutersdylan-martinez-britain-tags-sport-tennis-2CYKM9N.jpg)