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.

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billie jean king Archives - World Tennis Magazine

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Battle of the Sexes' was 50 years ago, but King's efforts still

Battle of the Sexes' was 50 years ago, but King's efforts still