September 20, 1973: Billie Jean King Defeated Bobby Riggs in the “Battle of the Sexes” Tennis Match - Lifetime

King’s defeat of Riggs, who had provocatively opined about the inherent inferiority of women’s tennis, was a milestone for the women’s liberation movement.

Who is Billie Jean King? Women's tennis legend, and BBC Sports

Battle of the Sexes takes center court and center stage

KING VS RIGGS: BATTLE OF THE SEXES

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KING VS RIGGS: BATTLE OF THE SEXES

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Billie Jean King

Billie Jean King's 'Battle of the Sexes' victory was 50 years ago

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Billie Jean King - Wikipedia

Battle of the Sexes takes center court and center stage