CAROLINE WOZNIACKI has been trying to change perceptions of herself ever since she rose to the number one ranking and she showed no sign of letting up yesterday.

The Dane’s ascent to the top of the women’s game was achieved without a grand slam victory and there remain doubts as to whether she has the mental toughness to win a major.

She has certainly impressed in Melbourne so far, however, her 6-4 6-3 victory over Dominika Cibulkova moving her into the fourth round.

During her five-minute appraisal of the match, she revealed: “I felt great out there today on the court, I think I played a pretty good match.

“I am happy I got revenge since I lost to her in Sydney.

‘‘It was not an easy match.

She went out there, she was really on fire. I’m happy to be through to the next round.”

Meanwhile, major rivals for the trophy, Belgian 11th seed Justine Henin and fourthseeded American Venus Williams crashed out.

Henin lost to Svetlana Kuznetsova while Williams was clearly feeling the effects of the leg injury as she could only manage a game and two points before defaulting against Andrea Petkovic.

Maria Sharapova is still going strong after coming from a set down to beat Germany’s Julia Goerges 4-6 6-4 6-4.

The match was delayed when it was discovered the court had a “dead spot” – a problem rectified by a man with a toolbag – and when the action got under way Sharapova soon found herself under the hammer. But she recovered well to beat hardhitting Goerges.