Andy Murray is through to the quarter-finals of the Australian Open after a roller coaster victory over Grigor Dimitrov.
Eugenie Bouchard overcome Irina-Camelia Begu in three sets to book a quarter-final date with Maria Sharapova.
Rafael Nadal will face Tomas Berdych in the Australian Open quarter-finals after impressive fourth round victories.
Serena Williams joined resurgent sister Venus and men's defending champion Stan Wawrinka in the fourth round.
World No 1 Novak Djokovic overcame a feisty Fernando Verdasco to power into the fourth round at the Australian Open.
Andy Murray will be hoping to avoid another Grand Slam exit when he faces Grigor Dimitrov again at the Australian Open.
Defending champion Stan Wawrinka eased past Jarkko Nieminen to book his place in the last 16 of the Australian Open.
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