Hsieh saved two match points to hold serve in a late burst of resistance but 2016 champion Kerber closed it out in the next game when she whipped an easy passing shot. Kerber, 30, will meet American Madison Keys for a place in the semi-final.Onto the quarters!!@AngeliqueKerber uses her insane fitness and athleticism to outlast Su-Wei #Hsieh 4-6 7-5 6-2. Up next: Madison Keys.#AusOpen pic.twitter.com/CunizFXZBW
— #AusOpen (@AustralianOpen) January 22, 2018