Caroline Wozniacki is a Danish former professional tennis player. She has been ranked as the world No. 1 in women's singles by the WTA, holding the position for a total of 71 weeks. Wozniacki has won 30 WTA Tour-level singles titles, including a major at the 2018 Australian Open as well as the 2017 WTA Finals. WTA world No. 1 from January 29, 2018 to February 25, 2018 — 4 weeks. Wiki link