Conversation so far:
How did Billie Jean get started?
Billie Jean King learned tennis on the many free public courts in Long Beach, taking advantage of the free lessons tennis professional Clyde Walker offered at those courts.
Did Billie Jean King have any endorsements?
The palimony lawsuit filed by Marilyn Barnett caused Billie Jean to lose an estimated $2 million in endorsements and forced her to prolong her tennis career to pay attorneys.

Question: Did she win any Grand slams?
Self-contained rewrite: Did Billie Jean King win any Grand slams?