Kaitlyn Christian is a tennis player from the United States. Christian is primarily a doubles player. She has a career-high doubles ranking of No. 38, achieved in February 2019, and a career-high singles ranking of world No. 570, achieved in September 2017. Christian was Emma Stone's body double as Billie Jean King in the 2017 film Battle of the Sexes, and she also is credited as portraying tennis player Kerry Melville in the film.