On this day 50 years ago, Billie Jean King beat Bobby Riggs in the Battle of the Sexes. It is estimated that 50 million people watched this on TV : r/tennis

Photos: The Battle of the Sexes, Billie Jean King vs. Bobby Riggs

Remembering History: Billie Jean King ushers in new era of women's equality with 1973 'The Battle of the Sexes' victory - NBC Sports

Today in History: September 20, Billie Jean King beats Bobby Riggs in tennis 'battle of the sexes

The seven biggest rivalries in women's tennis, part 1: Margaret Court vs Billie Jean King ·

Billie Jean King Recalls What Bobby Riggs Told Her After Their 'Battle of the Sexes' Match

50 years of equal prize money at the US Open paved way by Billie Jean King

Fifty Years Ago Today: Billie Jean King Defeats Bobby Riggs in “Battle of the Sexes”

Billie Jean King's 'Battle of the Sexes' inspiring 50 years later - Los Angeles Times

The Male is King, the Male is Supreme, and Women Should Know That. (Part I)