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Serena Williams is
the greatest tennis player of all
. Her 23 Grand Slam titles, her 319 weeks spent as the world's number
, and her 27 years at the top as a
are testament to that. However, her achievements have spread far beyond tennis. She has been an
to girls worldwide. Former tennis great Billie Jean King said her "greatest
may be yet to come". Current American player 18-year-old Coco Gauff cited Williams as her
. She said: "The impact you've had on me goes beyond any
that can be put together." Former United States First Lady Michelle Obama said: "I can't wait to see the
you continue to transform with your
."