ADELAIDE, Australia (AP) – World number 1 Ash Barty beat American Danielle Collins 3-6, 6-1, 7-6 (5) in the Adelaide International semifinals on Friday.
Barty will find world number 24 Dayana Yastremska in Saturday's final after the 19-year-old Ukrainian beat Aryna Sabalenka 6-4 7-6 (4).
Collins was bothered by a back injury in the final set. She received treatment and could continue.
"It was probably my first real taste (this year) of adrenaline at the end of matches," said Barty. "And that's what we are looking for, to try to do these things as best I can. I felt I did what I wanted to do well tonight and I pushed the boundaries."
Barty beat Yastremska at his only previous meeting last year in Miami.
"I've had a good preseason, worked on a lot of things and I think it's paying off … every game, I'm playing better and better," said Yastremska.
In the men's draw at Memorial Drive, South African Lloyd Harris reached his first ATP final by defeating fellow qualifier Tommy Paul 6-4, 6-7 (3), 6-3.
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