Emma Stone and Steve Carell are set to star as tennis superstars Billie Jean King and Robert 'Bobby' Riggs in "Battle of the Sexes" for Fox Searchlight. The story is said to focus on King's famous 'Battle of the Sexes' against 55-year-old retired former Wimbledon champion Riggs in 1973. Riggs claimed female tennis was inferior and challenged the then world No.