Kaitlyn Christian may not be faceless for much longer.

Christian acted as Emma Stone’s tennis double in the recently released film “Battle of the Sexes,” which re-created the pivotal 1973 exhibition match between Billie Jean King and Bobby Riggs.

When necessary, Christian’s face was replaced with Stone’s in the tennis scenes using sophisticated visual effects technology first developed to portray the identical twins Cameron and Tyler Winklevoss in the film “The Social Network.”

“It’s just kind of cool to see the finished product with her face on my body,” Christian, 25, said. “It looks so natural and it’s, like, just very strange for me to see that.”

In a Hollywood-style coincidence, Christian won the biggest tournament of her fledgling professional career on Oct. 1, the same weekend that “Battle of the Sexes” opened in theaters nationwide. Christian and her partner, Giuliana Olmos, a former teammate at the University of Southern California, took the trophy at a $60,000 I.T.F. Pro Circuit event in Templeton, Calif.