Agence France-PresseJanuary 19, 2014 10:34
Former world number one Ana Ivanovic pulled off a massive upset by beating top seed Serena Williams on Sunday to power into the Australian Open quarter-finals.
The Serb came from a set down to win 4-6, 6-3, 6-3, ending Williams' bid to match Chris Evert and Martina Navratilova with 18 Grand Slam titles.
Williams, who was gunning for a sixth Australian crown, did not appear to be moving freely with unconfirmed reports that she was carrying an injury.
She pulled out of the doubles on Friday, although that was blamed on an injury to sister Venus.