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Esther Vergeer wipes away a tear after announcing her retirement from wheelchair tennis at a press conference in Rotterdam, where she is a director of an able-bodied men's tournament.
Vergeer with the Dutch tournament's defending champion Roger Federer at the opening ceremony on February 11, marking its 40th anniversary KOEN SUYK/AFP/Getty Images
Vergeer retired undefeated in the past 10 years, having won 470 consecutive matches. Getty Images
She won four successive gold medals in the Paralympics singles tournament, 21 grand slams and 13 world titles. Getty Images
However, she fell short of the record 555 successive wins set between 1981-86 by Pakistani squash legend Jahangir Khan, pictured left in an exhibition against his former rival Jansher Khan in 2005. FAROOQ NAEEM/AFP/Getty Images/file
Australian squash player Heather McKay suffered only two defeats in her career before going undefeated from 1962-1981, but there are no exact records of her match statistics. Getty Images/file
Martina Navratilova holds the Open-era able-bodied tennis record of 74 consecutive wins, set in 1984. Getty Images/file
Argentina's Guillermo Vilas holds the men's record of 46 successive wins, set in 1977 when he won seven tournaments in a row as he reached No. 2 in the world rankings STF/AFP/Getty Images/file
