Sep 1, 2023; Flushing, NY, USA; Coco Gauff of the United States serves against Elise Mertens of Belgium (not pictured) on day five of the 2023 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center. Mandatory Credit: Geoff Burke-USA TODAY Sports

Sep 1, 2023; Flushing, NY, USA; Coco Gauff of the United States watches a video review of a shot against Elise Mertens of Belgium (not pictured) on day five of the 2023 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center. Mandatory Credit: Geoff Burke-USA TODAY Sports

Sep 1, 2023; Flushing, NY, USA; Coco Gauff of the United States serves against Elise Mertens of Belgium (not pictured) on day five of the 2023 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center. Mandatory Credit: Geoff Burke-USA TODAY Sports

Sep 1, 2023; Flushing, NY, USA; Elise Mertens of Belgium hits an overhead against Coco Gauff of the United States (not pictured)on day five of the 2023 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center. Mandatory Credit: Geoff Burke-USA TODAY Sports

Sep 1, 2023; Flushing, NY, USA; Coco Gauff of the United States serves against Elise Mertens of Belgium (R) on day five of the 2023 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center. Mandatory Credit: Geoff Burke-USA TODAY Sports

Sep 1, 2023; Flushing, NY, USA; Elise Mertens of Belgium reacts after wining a game against Coco Gauff of the United States (not pictured)on day five of the 2023 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center. Mandatory Credit: Geoff Burke-USA TODAY Sports