Keyes defeated number two seed Iga Swiatek in a tie-break in the third set
Madison Keys will face Aryna Sabalenka in a Grand Slam final for the first time this weekend.
The American defeated number two seed Iga Swiatek in a tie-break in the third set.
Sabalenka can become the first woman to win three consecutive Australian Open titles since Martina Hingis in 1999.
The final takes place in Melbourne this Saturday.

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