Top 5: Serena Williams's Most Memorable US Open Matches

The most successful tennis player of the Open era is Serena Williams, who has won 23 Grand Slam singles titles. Image/Si.com

The 1999 US Open Final: First Victory

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2001 US Open Final: Sisters Rivalry

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2002 US Open Final: Met Again

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2008 US Open Final: Title Regained

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2014 US Open Finals: Back to Back Slams

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