There has been some massive story-lines on Saturday at the Australian Open.
Alexander Zverev, one of the favourites to win the men's title in Australia, was on the wrong end of a major upset as he fell in a five-set thriller to Korean, Chung Hyeon.
The German found himself with a 2-1 lead in sets going into the fourth, but his opponent fought back to level at 2-2, before Zverev completely capitulated in the decider to give Hyeon the biggest victory of his career to date.
And in the women's tournament there was another thriller as world number one Simona Halep narrowly secured her passage to the fourth round following a four hour marathon with Lauren Davis.
The third and final set was full of drama, with Davis squandering three match points and both players struggling with injury.
But Davis, who's mobility was faltering following an injury to her toenail, was broken in the 27th game of the set, and Halep kept her nerve as she served out to emerge victorious 4-6, 6-4,15-13.
BALLBOY'S LUCKY ESCAPE
The Halep v Davis match was full of drama for a number of reasons, including a moment in the third set involving a ballboy which nearly ended in disaster.
After Davis hit a ball long, Halep casually hit the ball over the other side of the court back to her evidently frustrated opponent.
Aware the ball was out but annoyed she lost the point, Davis ran up to the ball and swung at it - not realising that a ballboy had leapt from his position to retrieve it.
And it so nearly ended in tears, as Davis' racquet came within inches from making contact with the youngster's head.
A very lucky escape for the ballboy.
HALEP'S POST-MATCH COMMENTS
It was a gruelling match between the two, and Halep expressed her relief in her post-match interview.
"Definitely it was a very tough match. So long," Halep said after equalling the Australian Open women's record for most games in a match.
"I've never played a third set so long so I'm very happy to win it. I'm almost dead!
"It's very nice that we could show good tennis, I hope you guys enjoyed it."
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