Australian Open : Rafael Nadal, Roger Federer and Maria Sharapova win

Rafael Nadal, Roger Federer and Victoria Azarenka all won in straight sets but Maria Sharapova had to work much harder to reach the fourth round. 

Federer beat Teymuraz Gabashvili while top seed Nadal saw off Gael Monfils on a cooler day in Melbourne.
Defending champion Victoria Azarenka brushed aside Yvonne Meusburger but Sharapova survived a scrappy second set to beat France's Alize Cornet 6-1 7-6.
Spain's Garbine Muguruza knocked out 10th seed Caroline Wozniacki.
Meanwhile, Dom Inglot is the only remaining Briton in the men's doubles after Colin Fleming, Ross Hutchins and Jamie Murray all went out in round two.