Poland's Magda Linette will meet Aryna Sabalenka of Belarus in the semi finals of the women's singles at the Australian Open.
Linette, the world number 45, was a 6-3, 7-5 winner over Karolina Pliskova.
Fifth seed Sabalenka defeated Donna Vekic, also in straight sets.
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American Tommy Paul is into the semi finals of the men's singles.
He defeated Ben Shelton in four sets.
Nine-time champion and hot favourite Novak Djokovic and Andrey Rublev have just begun their encounter.
