Stephens was raised by her mother and her stepfather, Sheldon Farrell, who married Smith in 1997 and worked as a business consultant.
She has a younger stepbrother, Shawn Farrell, who played baseball and football at Notre Dame High School outside of Los Angeles.
Her stepfather was a competitive recreational tennis player and served as her primary inspiration for beginning to play the sport.
Stephens moved to Florida to train at a tennis academy, ultimately working with Nick Saviano for many years.
She achieved a career-best Women's Tennis Association (WTA) ranking of No. Stephens is the reigning US Open champion, and has won six WTA titles in total.
In her first appearance in 2008, she defeated world No.
Stephens did not talk with her biological father until she was 13 years old, when he expressed interest in getting to know her after being diagnosed with degenerative bone disease.
Even though they only met a few times in person, the two of them developed a close relationship remotely.
Stephens was born on March 20, 1993 in Plantation, Florida to Sybil Smith and John Stephens, both of whom were accomplished athletes.
Her mother was the first African-American woman to be named a first-team All-American swimmer in Division I history.