Victoria Azarenka continued her quest for a third Australian Open as she defeated Caroline Wozniacki in a shock result.
The former number ones produced a high quality match up that saw Azarenka win in straight sets, 6-4 6-2.
Azarenka broke Wozniacki, the 2014 US Open finalist, in the opening game of the match and used a big forehand to take the first set.
The Belarusian, who won the title in 2012 and 2013, didn’t give Wozniacki a sniff in the second to wrap up the match in one hour and 38 minutes.
It is Wozniacki’s worst Australian Open finish in eight appearances.
Azarenka, now ranked world No.44, will next face 25th seed Barbara Zahlavova-Strycova with a potential quarter-final showdown with Serena Williams looming.