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 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.

Aryna Sabalenka (No. 1 ranking) will face Paula Badosa (No. 12) in the semifinals at the Australian Open on Thursday, January 23.Sabalenka secured a three-set victory over Anastasia Pavlyuchenkova