Coco Gauff is back in the win column at the US Open.
"The crowd was unreal today," Gauff said after the match. "I didn't think it would be that many people at the match, to be honest. I mean, I knew we were on [Louis Armstrong Stadium], but I couldn't see an empty seat and they were sold out and so supportive. I think that definitely helped us, especially when the pressure moments came."
"Coco and I just get along so well on and off the court," McNally said. "I think that helps so much. We have really good chemistry and we support each other. When one person gets down, the other person helps to get them back up and vice versa. I'm so thankful that I have Coco next to me."
Gauff, 15, and the 17-year-old McNally remained unbeaten as a team, having won the US Open junior title last year and teaming for their first WTA doubles title this summer in Washington.
The Associated Press contributed to this report.