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 face close friend Paula Badosa in the semi-finals of the Australian Open after battling to victory over Anastasia Pavlyuchenkova. The two-time defending champion’s 18-match winning run at Melbourne Park looked in serious danger when she lost the second set on a windy Rod Laver Arena.

Delray Beach's Coco Gauff was eliminated from the Australian Open Tuesday, losing in straight sets to Spain's Paula Badosa. The third-seeded Gauff, who had been playing well since the end of the year, fell 7-5, 6-4 in the quarterfinals at Rod Laver Arena.