Billie Jean King to join Jill Biden to mark Title IX’s 50th anniversary

Billie Jean King and Jill Biden are teaming up to mark the 50th anniversary of Title IX at a celebration in Washington.

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Title IX, the federal civil rights law that prohibited sex-based discrimination in educational programs

Seventy-eight-year-old King — who famously won the 1973 “Battle of the Sexes” match against Bobby Riggs

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It’s not the first time that King has championed Title IX at an event tied to 1600 Pennsylvania Ave.

The 39-time Grand Slam champion also marked the 40th anniversary of Title IX back in 2012

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The Wednesday gathering will also recognize the 10th anniversary of the State

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