Iga Swiatek faces rising star Mirra Andreeva, while Aryna Sabalenka takes on Madison Keys -- two high-stakes showdowns with a spot in the final on the line. Here’s the case for each contender.

World No. 1 Aryna Sabalenka defeated Liudmila Samsonova on a windy evening to set up an Australian Open rematch against No. 5 Madison Keys in the semifinals.