FILE - In this Sept. 3, 2015, file photo, Victoria Azarenka, of Belarus, returns a shot to Yanina Wickmayer, of Belgium, during the second round of the U.S. Open tennis tournament, in New York. Two-time Australian Open champion Victoria Azarenka says her participation in the U.S. Open is in doubt because she might not be able to bring her baby son with her to New York as a result of her separation from the child's father. Azarenka says via a posting on Twitter on Thursday, Aug. 17, 2017, that she is "faced with a difficult situation which may not allow me to return to work right away." (AP Photo/Charles Krupa, File)