American Danielle Collins continued her remarkable grand slam breakthrough by defeating Anastasia Pavlyuchenkova to reach her first semi-final at the Australian Open.
The 25-year-old arrived at Melbourne Park having never won a match in the main draw of a slam but recovered from a set down to win 2-6 7-5 6-1 in two hours and 16 minutes.
This was a meeting between two players looking to make the last four at a slam for the first time but it was Collins who swept through the third set, clinching her third match point when Pavlyuchenkova missed a forehand.
Collins next faces eighth seed Petra Kvitova, who ended hopes of a home singles champion with a crushing victory over Ashleigh Barty.
Barty was the first Australian woman to reach the last eight for 10 years and there was optimism she could become the first home winner since Chris O'Neil in 1978, but Kvitova was in devastating form in a 6-1 6-4 victory.
The Czech has not lost more than five games in any of her matches so far and is through to the last four at a slam for the first time since winning her second Wimbledon title in 2014 and a little over two years after fearing she might never play again when she was stabbed in the hand by an intruder at her home.
Kvitova's victory, meanwhile, ensures Simona Halep will be replaced as world number one, although Naomi Osaka, Karolina Pliskova and Elina Svitolina are also in the frame.
Kvitova began her on-court interview by apologising to the deflated crowd, saying: "I'm sorry guys. She's such a nice person and you should be very proud of her.
"It was a great match, definitely. She came back well, she didn't give me anything for free and I really had to fight until the end."
The 28-year-old became emotional when asked about the struggles she has been through, choking back tears as she said: "I didn't really imagine to be back in this great stadium, it's great."
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