Madison Keys has looked unstoppable Down Under. The 22-year-old American has stormed into the quarterfinals without the loss of a set. In her fourth round encounter with Caroline Garcia, she lost just five games.

"I feel like I'm playing just solid, consistent tennis. I think today was a good example of that," Keys said. "I think I served well. I think I returned well. But I don't think I played unbelievable. I think I just played really solid and smart."

Keys will take on 2016 Australian Open champion Angelique Kerber for a spot in the semifinals. Kerber has rediscovered her winning ways in the comforts of Melbourne Park. She holds a considerable edge in their head-to-head record, 6-1.