Sloane Stephens' remarkable play at the US Open won her a maiden Grand Slam title and countless new fans. The American surely appreciates all of hew new supporters—but some are just a little more special than others.
Take, for example, American tennis legend Billie Jean King and Oscar-winning actress Emma Stone—who plays King in Battle of the Sexes, which will be released nationwide on September 29 (limited release September 22). Both stars congratulated the game's newest star at, of all places, the USTA Billie Jean King National Tennis Center: