FILE - In this Sept. 7, 2017 photo, Venus Williams, of the United States, returns a shot from compatriot Sloane Stephens during the semifinals of the U.S. Open tennis tournament in New York. Williams returns to the year-end WTA Finals for the first time since reaching the 2009 final, and the fifth time overall, starting on Sunday, Oct. 22 in Singapore. (AP Photo/Julio Cortez, File)
U.S. Open 2011
The U.S. Open is underway in Flushing Meadows, New York.