Caroline Wozniacki (R) (Danish: [kʰaːoliːnə vɒsniˈaki]; Polish: [vɔʑˈɲatskʲi]; born 11 July 1990) is a Danish professional tennis player. She is a former world No. 1 in singles, the 20th in the Open Era, and the first woman from a Scandinavian country to hold the top ranking position. She finished on top of the rankings in both 2010 and 2011.