Sam Stosur has once again crumbled when the pressure was on to lose her second round match to China's Jie Zheng.

Stosur served for the match in the third at 5-4 only to be broken as Zheng came storming home.

The Chinese player held her serve then broke Stosur again to take the third set 7-5.

Stosur double faulted to lose the game.

It is now her 11th Australian Open without moving past the fourth round.

More to come.

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