Rosie Casals is a real person portrayed by Natalie Morales in the movie Battle of the Sexes (based on a true story).
When the movie was released in 2017, Natalie Morales was 32 years old.
The character of Rosie Casals is mainly associated with Billie Jean King, Jane 'Peaches' Bartkowicz and Valerie Ziegenfuss.