Coco Gauff confirmed she did indeed tell her team to "stop talking" at one point but also highlighted her coaches Brad Gilbert and Pere Riba take no offense to it. As Gauff was on the verge of losing the second set to Caroline Wozniacki in their US Open round-of-16 match, the cameras picked her up telling to someone in her box: "Please stop.
Stop talking." Since just moments earlier Gilbert was heard telling Gauff to “play with more air on your shots," many felt Gauff's "stop talking" was directed at Gilbert.

Gauff on telling her team to 'stop talking'
“It wasn't really towards him (Brad Gilbert).
There has been situations a couple times in the matches where Pere and Brad will both talk at the same time. I will say, ‘Okay, stop talking’ because it jumbles my head. Sometimes when I go to my towel, it's a reset moment.
I don't need to hear anything. I just need to reset and think about me. I do think today I did say, ‘Stop talking’, at one point because I was getting frustrated. They understand what it is before I went on the court or before we started this tournament.
I did it in Cincinnati. They don't take any offense to it. They know sometimes I just need to not hear anything. Sometimes maybe you guys are hearing more than what I'm hearing. Sometimes I've heard from, like, off the camera, my parents will say, ‘Yeah, he talks a lot.’ But to be honest, I can't really hear him that well,” Gauff said.
After losing the second set to Wozniacki, Gauff bounced back in the third set as she claimed a 6-3 3-6 6-1 win over the Dane. Gauff got broken in the first game of the third set but then responded by winning the next six games to seal a three-set win.