Alexis Ohanian, center, and fans cheer for Serena Williams during her match against Anett Kontaveit at the second round of the U.S. Open on Wednesday in New York.
In what could be the final tournament of the decorative career of Serena Williams, many celebrities have come out to watch and support the 23-time Grand Slam event winner. Williams is competing in singles and also in doubles with her sister Venus.