Tennis: Defending champion Azarenka into Aussie quarters

Victoria Azarenka blasted past young American Sloane Stephens and into the Australian Open quarter-finals on Monday as the defending champion started hitting top form.

The Belarusian second seed moved into a last-eight clash with either fifth seed Agnieszka Radwanska or exciting young Spaniard Garbine Muguruza with a 6-3, 6-2 win.