Conversation so far:
What was your favorite thing you read aboutBillie Jean King and gender equality?
When the open era began, Billie Jean King campaigned for equal prize money in the men's and women's games.
How did Billie Jean King affect equality?
Billie Jean King is an advocate for gender equality and has long been a pioneer for equality and social justice.
Did many women play the sport at the time of Billie Jean King?
Not only has tennis been popular with women in the United States since its introduction — tennis was introduced to the United States by a woman, namely Mary Ewing Outerbridge.
Did Billie Jean King recieve recognition for her work?
Billie Jean King was the Associated Press Female Athlete of the Year in 1967.
How did Billie Jean King get started with tennis?
Billie Jean King switched from softball to tennis at age 11, because her parents suggested she should find a more ladylike sport.

Question: Tell me more about what you read, a fun fact.
Self-contained rewrite: Tell me more about what you read, a fun fact about Billie Jean King.