Simona Halep (Romanian pronunciation: [siˈmona haˈlep]; born 27 September 1991) is a Romanian professional tennis player. She has been ranked world No. 1 in singles twice between 2017 and 2019. She reached the No. 1 ranking for the first time on 9 October 2017. On her second occasion, she held the ranking for 48 consecutive weeks. In total, she has been No. 1 for 64 weeks, which ranks tenth in the history of women's tennis. Halep was the year-end No. 1 in 2017 and 2018. She has won 19 WTA singles titles. Halep has also finished runner-up 17 times. Halep has won two Grand Slam singles titles: the 2018 French Open, and the 2019 Wimbledon Championships.