Ashleigh Barty has won her quarterfinal against fellow Aussie Ajla Tomljanovic with a straight sets victory.
Barty won the game with a commanding 6-1, 6-3.
She will now play Angelique Kerber in the semi-finals.
Kerber – who beat Karolina Muchova 6-2, 6-3 – is the only one of the quartet who will contest them to have already been in the last four at the tournament.
Former world number one Karolina Pliskova will play Aryna Sabalenka of Belarus in the other semi-final.