Madison Keys saved a match point before stunning world number two Iga Swiatek to set up an Australian Open final against two-time defending champion Aryna Sabalenka.
Keys claimed a stunning 5-7 6-1 7-6 (10-8) victory over five-time Grand Slam champion Swiatek to reach the second major final of her career.
The American, runner-up at the US Open in 2017, held her nerve wonderfully in a final set that was fraught with tension and ended shortly after midnight in Melbourne.
That came after Belarusian top seed Sabalenka earned the chance to become the first woman in 26 years to win three successive Australian Open titles with a commanding 6-4 6-2 win over close friend Paula Badosa.
While Keys has achieved a career-best Australian Open run, Sabalenka is aiming to emulate Martina Hingis’ three straight titles between 1997-99.
“I have goosebumps. I am so proud of myself and my team that we were able to put ourselves in such a situation,” Sabalenka said.
“If I put my name in history it will mean the world for me. I couldn’t even dream of it.”