Billie Jean King grew up surrounded by sports of all kinds. But the first time she played tennis, she knew she would become World No. 1. On and off the court, she strived for equality, blazing a trail for women in sports and showing the world that women's tennis deserved to be taken seriously. Billie Jean continues to teach young players the value of teamwork and the importance of equality in sports. This inspiring story of the tennis legend's life...