Billie Jean King : A Female Tennis ChampionLooks back to the 12-year-old girl who played tennis on public courts, observed disparity and, as she soared athletically, never stopped trying to remedy inequality. Perhaps best remembered from "The Battle of the Sexes" match vs. Bobby Riggs on Sept. 20, 1973, her competitiveness on the court was matched by her efforts on behalf of women and the LGBT community, and her commitment to prove there is strength in diversity. This documentary was an episode of "American Masters" aired September 10, 2013, runs 83 minutes, from Kanopy Video Collection.