FILE - In this July 11, 1973 file photo, Wimbledon champion Billie Jean King checks the muscle on her nemesis, Bobby Riggs, in New York. The story of the early days of the tour and King's fight for equal prize money is chronicled in the movie "Battle of the Sexes," which opened nationwide on Friday, Sept. 29, 2017. (AP Photo/Anthony Camerano, File)