Victoria Azarenka ready for "tough" Dominika Cibulkova test

Victoria Azarenka is ready for the latest test of her difficult Australian Open draw as she prepares to play Dominika Cibulkova in the fourth round.

Two-time champion Azarenka beat Barbora Zahlavova-Strycova 6-4 6-4 on Saturday as she continued her impressive return from an injury-prone 2014.

Having previously overcome highly-rated American prospect Sloane Stephens and former world number one Caroline Wozniacki in Melbourne, things don't get easier for Azarenka as she now takes on the 2014 runner-up.

"[She is a] very tough opponent, as I've had all of my rounds. She obviously had a lot of great success here" Azarenka told the tournament's official website.

"I'm just going to have to try to do my best, give it 100%, be aggressive. She's going to make a lot of shots and she's going to be very motivated. I've just got to step it up.

"It's just another match, another opportunity to improve... I'm just happy that I managed to go through my matches. There are things that obviously I want to improve. But it's a progress. It's one step closer. So I'm happy I have another opportunity to play Monday."

Azarenka has claimed that she is playing better than she did when she won the Grand Slam two years ago.