Add Yahoo as a preferred source to see more of our stories on Google. FILE - In this Tuesday, Aug. 30, 2016 file photo, Ana Ivanovic of Serbia serves to Denisa Allertova of the Czech Republic, during ...

Ivanovic, who won the French Open in 2008, had slipped down the rankings while dealing with injuries. She said she could no longer play to her standards. By The Associated Press Nigel Sears, Ana ...