Yes, Aryna Sabalenka is the heavy favorite to win her third straight Australian Open title, but Madison Keys is playing lights-out tennis. Here's why she can pull off the upset.

When Madison Keys finally finished off her 5-7, 6-1, 7-6 (10-8) upset of No. 2 Iga Swiatek in a high-intensity, high-quality Australian Open semifinal on Thursday night, saving a match point along the way,

American Madison Keys will take on top-ranked Aryna Sabalenka in the Australian Open final after outlasting world No.2 Iga Swiatek.