Pervak knocks out Wozniacki in Brisbane
Caroline Wozniacki's bid for Australian Open glory has taken a big hit as she was dumped out of the Brisbane International.
The 22-year-old had endured a difficult 2012 already, having lost the world number one ranking while also failing to make an impact at any of the Grand Slam tournaments.
And her bid for success at Melbourne Park next month has been hit with a surprise defeat to world number 103 Ksenia Pervak at the Brisbane International.
The Kazakh 21-year-old committed 61 unforced errors but still managed to book her progress with a 2-6 6-3 7-6 (7-1) win.
Wozniacki said: "You know, I'm still 10 in the world.
"Just the most important thing is that you're healthy. I had some struggles with my health. Obviously that makes a difference.
"But as long as I'm healthy and I can fight and be competitive, that is the most important thing."
Fourth seed Angelique Kerber was given a tough workout by Anna Tatishvili of Georgia but came through 6-2 4-6 6-2, while her compatriot Sabine Lisicki eased past Lucie Safarova 6-2 6-4 to set up a clash with top seed Victoria Azarenka.
Sara Errani and Sloan Stephens both enjoyed comfortable straight-sets wins, while Alize Corent beat Australia's Bojana Bobusic 2-6 6-3 6-1 to set up a chance to take on Serena Williams.