It brings back the memories of 12 months ago with Rafa . '' Defending champion Nicolas Almagro survives five -set epic to defeat Australian . Serbian world No . five wins 1 -6 7-5 6-4 6-7 12-10 to maintain Australian Open defense . David Ferrer , Tomas Berdych and Tomas Berdych all through to quarterfinals . Maria Sharapova , Agnieszka Radwanska and Maria Sharapova through to last eight in women 's draw .
Defending champion Nicolas Almagro survives five -set epic to defeat Australian . Serbian world No . five wins 1 -6 7-5 6-4 6-7 12-10 to maintain Australian Open defense . David Ferrer , Tomas Berdych and Tomas Berdych all through to quarterfinals . Maria Sharapova , Agnieszka Radwanska and Maria Sharapova through to last eight in women 's draw .