Simona Halep outlasted 2016 Australian Open champion Angelique Kerber in a dramatic semifinal, setting up the championship match against Caroline Wozniacki. A lot will be on the line. The winner will be world No. 1 (Halep is at the spot currently and Wozniacki first reached the peak of the sport in 2010). Neither has ever won a Grand Slam title, but both have played two finals (Halep at the '14 and '17 French Open and Wozniacki at the '09 and '14 US Open). The final will take place on Saturday night (Melbourne time).