is an American tennis player. She is the youngest player ranked in the top 100 by the Women's Tennis Association (WTA) and has a career-high ranking of No. 49 in the world in singles, and No. 42 in doubles. Gauff won her first WTA singles title at the 2019 Linz Open at the age of 15, making her the youngest singles title-holder on the WTA Tour since 2004. She also has won two WTA doubles titles with compatriot and fellow teenager Caty McNally. Gauff rose to prominence with an upset win over Venus Williams in the opening round at Wimbledon in 2019.