The Madison Keys who will play two-time defending champion Aryna Sabalenka for the title at the Australian Open on Saturday night is not the same Madison Keys who was the runner-up at the U.S.

Sabelenka will face 19th seed Madison Keys for the Daphne Akhurst Memorial Cup, with the American having produced one of the shocks of the tournament to beat Iga Swiatek in a final-set tiebreak to secure a dramatic 5-7, 6-1, 7-6 (10-8) victory.

With women’s tennis on the verge of an epic showdown between its top two players with the Australian Open title on the line, Keys, the 29-year-old American, crashed the party. She stormed back against Iga Swiatek to win their semifinal 5-7, 6-1, 7-6 (10-8)