United States' Serena Williams returns the ball to United States' Varvara Lepchenko, during their match at the Italian open tennis tournament, in Rome, Thursday, May 15, 2012. (AP Photo/Andrew Medichini)
United States' Serena Williams reacts after winning a point to United States' Varvara Lepchenko, during their match at the Italian open tennis tournament, in Rome, Thursday, May 15, 2012. (AP Photo/Andrew Medichini)
Serena Williams, of the United States, attends a press conference ahead of her participation to the Italian open tennis tournament, in Rome, Monday, May 12, 2014. (AP Photo/Riccardo De Luca)
Serena Williams, of the United States, attends a press conference ahead of her participation to the Italian open tennis tournament, in Rome, Monday, May 12, 2014. (AP Photo/Riccardo De Luca)