Coco Gauff beat Karolina Muchova 6-4, 7-5 to reach her first U.S. Open final in a match that was halted for nearly an hour when an environmental activist glued his feet to the floor of Arthur Ashe Stadium on Thursday.

Gauff, who had beaten Muchova in the Cincinnati final last month to claim the biggest title of her career, fed off the energy of the home crowd to get past the Czech once again.

"Some of those points, it was so loud and I don't know if my ears are going to be okay," Gauff said. "I grew up watching this tournament so much so it means a lot to me to be in the final. A lot to celebrate but the job is not done."