American Danielle Collins says it felt "incredible" to reach the Australian Open semi-finals less than a year after taking an indefinite break from tennis.
Collins, 28, had surgery for endometriosis in April, returning to action two months later.
Now the 27th seed has reached her second semi-final in Melbourne after a 7-5 6-1 win over France's Alize Cornet.
Collins faces seventh seed Iga Swiatek, who beat veteran Kaia Kanepi 4-6 7-6 (7-2) 6-3, in Thursday's semi-final.
Poland's Swiatek, who won the 2020 French Open title as a teenager, will play in her second Grand Slam semi-final after coming through an intense battle which lasted more than three hours.