American teenager Coco Gauff reached her first US Open singles final after beating Karolina Muchova in a semi-final disrupted by protesters.
Gauff, 19, wrapped up a 6-4 7-5 win over Czech 10th seed Muchova when the pair resumed after a 50-minute delay.
Gauff could not convert a match point when serving at 5-4, but broke Muchova to seal victory after winning a 40-shot rally to create the sixth opportunity.
The sixth seed plays Aryna Sabalenka or Madison Keys in Saturday's final.
It will be her second attempt to win a Grand Slam singles final after finishing runner-up to Poland's Iga Swiatek at the 2022 French Open.