The fourth day of the Australian Open saw significant upsets and thrilling comebacks. Laura Siegemund triumphed over Olympic champion Zheng Qinwen, while Aryna Sabalenka advanced after a comeback.
Kartal 1-6 2-4 BouzasManeiro* Sonay Kartal needs to hold serve here to extend her Australian Open debut even by a few more minutes as Jessica Bouzas Maneiro moves ever closer to victory.