On Oct. 3, 1971, Billie Jean King beat Rosie Casals in Phoenix and became the first woman athlete to earn $100,000 in a year. The $1 contracts that started it, the Nixon call, and the pay gap that remained.

On Oct. 3, 1971, Billie Jean King beat Rosie Casals in Phoenix and became the first woman athlete to earn $100,000 in a year. The $1 contracts that started it, the Nixon call, and the pay gap that remained.

On Oct. 3, 1971, Billie Jean King beat Rosie Casals in Phoenix and became the first woman athlete to earn $100,000 in a year. The $1 contracts that started it, the Nixon call, and the pay gap that remained.