Defending champion Aryna Sabalenka will be out for "revenge" when she takes on American teenager Coco Gauff for a place in the Australian Open final.
The Belarusian lost out in a thrilling US Open final in September after Gauff fought back from a set down to triumph.
Seeking to retain the title which represented her first major title 12 months ago, Sabalenka has been in devastating form in Melbourne.
"After the US Open, I really wanted that revenge," said Sabalenka.
"It's always a great battle against Coco, really great fights. I'm happy to play her and I'm super excited to play the semi-final match," the 25-year-old added.