1973: The year on this day that Bobby Riggs played Billie Jean King in the notorious “Battle of the Sexes” tennis match

6-4, 6-3, 6-3: The score by which King beat Riggs

$100,000: Her winnings

1973: The year King lobbied for, and obtained, equal prize money for men and women at the U.S. Open

$60,000: How much more the men’s Wimbledon winner earned than the women’s winner this year (of the Big Four, Wimbledon is the only one that still does not offer equal prize money)