Ash Barty has become the first Australian woman since Wendy Turnbull in 1984 to win her way to the semifinals of the Aus Open.
Barty absorbed the power of Petra Kvitova and then was driven by her in straight sets to advance to the last four.
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Roger Federer faces the Tennys Sandgren surprise package on a rare day for the Swiss superstar and world No. 1 Novak Djokovic will then line up against Milos Raonic.
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Originally published as ‘Houston, we have a problem’: Federer broken with ropes