Learn about tennis superstar Sloane Stephens in this book in a nonfiction series about your favorite athletes' childhoods and what (or who) helped them become the stars they are today Sloane Stephens comes from a family of athletes. Her mother was an All-American swimmer while her father was an NFL running back. However, Sloane came to tennis by accident: she needed something to do while her mother played, so she picked up a racquet...