Grand Slam: Serena Williams' Most Memorable Moments

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  • Serena Williams
  • Serena Williams
  • Serena Williams
  • Serena Williams
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  • US Open
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  • Venus Williams, Serena Williams
  • Serena Williams, Venus Williams

2002 Wimbledon Championships

But just as thrilling to watch is when the Williams sisters are on the opposite sides of the court, as they were at Wimbledon in 2002. Serena beat her older sister to win the title for the first time and to become the No. 1 world ranking in women's tennis. (Photo: Clive Brunskill/Getty Images)