Marta Kostyuk
Marta Kostyuk is a Ukrainian tennis player. She has career-high rankings of 49 in singles, achieved on 14 February 2022, and world No. 45 in doubles, reached on 6 June 2022. Kostyuk started playing tennis at a young age at the Antey Tennis Club, on the west side of Kyiv, coached by her mother. She described her initial experience in tennis at age five: "My mom was always working a lot as a coach, and the first time I went to the courts to train, I just understood that if I started doing tennis, I'd get to spend more time with my mom. So that was kind of my motivation - if I played tennis, I'd be around her more often". She was also coached by her maternal uncle Taras Beiko, who had played for the USSR and Ukraine in the late 1980s and early 1990s