Jelena Janković (Serbian Cyrillic: Јелена Јанковић, born February 28, 1985) is a professional tennis player from Serbia. Janković is a former World No. 1 in singles, in the months following her finals appearance at the 2008 US Open. Janković's career highlights include winning the 2007 Wimbledon Mixed Doubles title with Jamie Murray, the 2010 BNP Paribas Open, the Internazionali BNL d'Italia twice, in 2007 and 2008 and the aforementioned appearance in the finals of the 2008 US Open. As of 31 December 2012 (2012 -12-31) Janković is ranked No. 22.