Defending champion Aryna Sabalenka avenged a US Open final loss to Coco Gauff and became the first woman since Serena Williams to reach back-to-back finals at the Australian Open on Thursday.

Sabalenka attacked Gauff’s serve with her powerful returns and unloaded 33 winners in the 7-6 (2), 6-4 victory that extended her winning streak to 13 matches at Melbourne Park.

“I was just ready for anything tonight,” Sabalenka said. “I was able to focus on myself.”

She will meet Zheng Qinwen in Saturday’s championship decider after the No. 12 seed defeated Dayana Yastremska 6-4, 6-4. Zheng and No. 93-ranked Yastremska were both playing in their first Grand Slam semifinal.