Karolína Plíšková is a Czech professional tennis player. She has been ranked as the world No. 1 in women's singles by the WTA, achieved in July 2017, and No. 11 in doubles. Plíšková has won 17 singles and five doubles titles on the WTA Tour. She is a two-time major finalist at the 2016 US Open and the 2021 Wimbledon Championships. WTA world No. 1 from July 17, 2017 to September 10, 2017 — 8 weeks. Wiki link