Paula Badosa thought she might retire due to a back injury. A year later, she's in to the semifinals against close friend Aryna Sabalenka.

Aryna Sabalenka, the world No. 1 and two-time champion at the Australian Open, survived a major scare against Anastasia Pavlyuchenkova to advance to the semifinals. Sabalenka was twice a break down in the deciding set,

Aryna Sabalenka will not let her friendship with Paula Badosa affect her quest to win a third successive Australian Open title when the best friends clash in the semi-finals, the defending champion said on Tuesday.