Zheng Jie is a Chinese professional tennis player. Her career high ranking is World No. 15 which she achieved in 2009. As of 27 August 2012, Zheng is ranked World No. 28 in singles and World No. 24 in doubles and is the 2nd ranked Chinese player, behind Li Na. Her career high doubles ranking is World No. 3. Zheng has reached the singles semi-finals at the 2008 Wimbledon Championships, defeating a World No. 1, Ana Ivanovic, in the process, becoming the first Chinese female player to advance to the semi-finals at a Grand Slam. She also advanced to the semi-finals at the 2010 Australian Open.