Jelena Jankovic (born 28 February 1985) is a Serbian professional tennis player. Jankovic is a former World No.1 in singles, a ranking achieved preceding her finals appearance at the 2008 US Open. Jankovic's career highlights include winning the 2007 Wimbledon Mixed Doubles title with Jamie Murray, the 2010 BNP Paribas Open. the International BNL d'Italia twice, in 2007 and 2008, and the aforementioned appearance in the finals of the 2008 US Open. She is coached by her brother Marko.