Yan Zi is a Chinese professional tennis player. In 2005, at the age of 20, Yan Zi won her first and only WTA Tour singles title at the Guangzhou Tier III tournament. In doubles, Yan Zi's highest ranking to date is number 4 and she has won two grand slam titles partnering with Zheng Jie. She has winning records against top 10 stars Jelena Janković 2–0, Ana Ivanović 1–0, and Marion Bartoli 1–0. Until January 2002, Yan met with mixed results as a singles player in the lower reaches of the ITF tournament hierarchy. But that month, she reached the final of a $10,000 ITF event at Hull, losing to Liu Nan-Nan. She put in her career-best performance to date at Fukuoka, reaching the semi-final with wins over Rika Fujiwara and countrywoman Sun Tiantian. In January, 2005, Yan battled her way past three high-quality opponents, Julia Schruff, Shikha Uberoi and Melinda Czink, to qualify for Tennis Gold Coast, an important WTA event.Then in June, she surpassed her previous career-best result, reaching the final of a $50,000 tournament at Beijing with wins over Sun and Zheng. At the second round of the 2007 Canada Masters in Toronto, Canada she upset World No. 4 Ana Ivanović with a score of 6–3, 6–1 in just over an hour.At the 2008 Beijing Summer Olympics, Yan and her partner Zheng Jie won the women's doubles bronze medal. At the 2008 Beijing Summer Olympics, Yan and her partner Zheng Jie won the women's doubles bronze medal. In July the same year, she captured the ladies' doubles final at Wimbledon with longtime partner Zheng Jie.