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 October 11, 2010 to February 13, 2011 — 18 weeks. Wiki link