MELBOURNE (Reuters) - Victoria Azarenka, champion for the last two years at Melbourne Park, was knocked out of the Australian Open quarter-finals by fifth seed Agnieszka Radwanska on Wednesday.

Pole Radwanska beat the second seeded Belarusian 6-1 5-7 6-0 to set up a last four meeting with Dominika Cibulkova of Slovakia.

(Reporting by Nick Mulvenney, editing by Peter Rutherford)