Aus Open: Day six in pictures

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United States' Varvara Lepchenko had a tough day against Zhang Shuai of China, as she managed to win only four games.
Andy's fans cheering for him as the world no. 2 went past Sousa in in two hours and 24 minutes on the Margaret Court Arena.
Andy Murray overcame a second set slump to defeat Portugal's Joao Sousa in four sets. Murray will next meet Bernard Tomic or John Millman.
Less than 100 metres away from the Margaret Court Arena, Andy Murray's father-in-law and Ana Ivanovic's coach Nigel Sears collapsed and had to be taken to a hospital during Ivanovic's match against 15th seed Madison Keys.
Ana Ivanovic waves at the crowd as she leaves the arena having lost to Madison Keys in a three-set battle.
Canada's Milos Raonic serving against Viktor Trocki in a third round match. Raonic had a facile 6-2 6-3 6-4 win against his Serbian opponent.
Spain's David Ferrer signs autographs after winning his third round match against Steve Johnson. Ferrer eased into a straight set victory.
Frenchman Gael Monfils acknowledges his fans after beating his compatriot Stephane Robert in straight sets.
Zhang Shuai vents her delight after beating Varvara Lepchenko.
The brightly dressed Stan Wawrinka dispatched his Czech opponent Lukas Rosol in straight sets.