FILE - In this Jan. 23, 2013 file photo, Serena Williams answers questions at a press conference following her quarterfinal loss to compatriot Sloane Stephens at the Australian Open ten

 

              FILE - In this Jan. 23, 2013 file photo, Serena Williams answers questions at a press conference following her quarterfinal loss to compatriot Sloane Stephens at the Australian Open ten
FILE - In this Jan. 23, 2013 file photo, Serena Williams answers questions at a press conference following her quarterfinal loss to compatriot Sloane Stephens at the Australian Open tennis championship in Melbourne, Australia. Williams can reclaim the No. 1 ranking at the Qatar Open, a spot the 15-time major champion has not held since October 2010. The second-ranked Williams will move up if she reaches the semifinals of the tournament, which starts Monday, Feb. 11, 2013, and features nine of the top 10 players. The 31-year-old American would be the oldest woman to reach No. 1. (AP Photo/Andrew Brownbill, File)