Coco Gauff became the youngest American woman to advance to the U.S. Open final since Serena Williams in 1999 with her victory in the tournament's semifinals Thursday night. Gauff, the No. 6 seed, reached her first US Open final after beating No. 10 Karolina Muchova of the Czech Republic on Thursday night, 6-4, 7-5, and will await the winner of the second semifinal between No. 2 seed Aryna Sabalenka and No. 17 Madison Keys. Gauff not only had to overcome a difficult opponent Thursday, she had to survive a potential momentum-killing delay early in the second set that stretched for approximately 50 minutes when three environmental protestors began yelling from the upper deck. Though police were able to quickly remove two of them, one had glued his feet to the floor, necessitating an entire team of security to handle the disturbance. Click the link in our bio to read more about Gauff's win. 📸: Robert Deutsch / @usatodaysports