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 tennis star Madison Keys completed a huge comeback victory over World No. 2 Iga Swiatek in Thursday's Australian Open semifinal to set up a final matchup vs. World No. 1 and reigning champion Aryna Sabalenka.

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