Bianca Vanessa Andreescu is a Canadian professional tennis player. She has a career-high ranking of No. 4 in the world, and is the highest-ranked Canadian in the history of the Women's Tennis Association (WTA). Andreescu was the champion at the US Open and the Canadian Open in 2019, defeating Serena Williams to win both titles. She is the first Canadian tennis player to win a major singles title, and the first to win the Canadian Open in 50 years. She was also the first player to win a major singles title as a teenager since Maria Sharapova in 2006.

Bianca Andreescu defeated Serena Williams in the final, 6–3, 7–5 to win the women's singles tennis title at the 2019 US Open. It was her first major title, and she became the first Canadian, as well as the first player born in the 2000s, to win a major singles title. In addition, she was the youngest player since Svetlana Kuznetsova in 2004 to win a major singles title, and the first woman to win the US Open on her main draw debut. With the win, Andreescu entered the top 5 in rankings for the first time.