The tennis great said her prognosis is good and she will start treatment this month.
Actress and model Emily Ratajkowski, meanwhile, has protested the law with a near-nude photograph on Instagram.
"It was a shock," the tennis great says in a gender pay-gap documentary.
The tennis great is calling for Margaret Court Arena to change its name.
The tennis legend challenged FIFA and IOC officials to be "leaders" against abuses.
Sara Paretsky is the award-winning author of the V. I. Warshawski detective novels. In 1982, when Sara wrote Indemnity Only, she revolutionized the mystery novel by creating a hard-boiled woman investigator.
Serena Williams just won her 20th Grand Slam tennis tournament. This amazing performance has her following in the footsteps of some tennis women greats who came before her. Match the woman with her accomplishment.