WATCH: Billie Jean King Trailer

Calling her the "most important female athlete of the 20th century," the PBS series American Masters has turned its spotlight on Billie Jean King, who turns 70 on November 22. It's the first time the series has profiled a sports figure.

The 90-minute documentary includes new interviews, telling King's story from the perspective of Serena & Venus Williams, Hillary Clinton, Sir Elton John, Maria Sharapova, members of the Virginia Slims Circuit "Original 9" including Rosie Casals, Gloria Steinem, Chris Evert, Margaret Court, Bobby Riggs' son Larry, family, friends, and many others.

"Billie Jean King embodies the art of sports, of humanism, and of activism. For more than 50 years, her excellence and example have sparked the way for changes that enrich us all," said Susan Lacy, creator and executive producer of American Masters. "Billie Jean's star on our cultural landscape shines brighter and brighter, with no end in sight."

Watch a trailer for the documentary, which airs September 10, below:

Watch Trailer: Billie Jean King on PBS. See more from American Masters.