Are Sun Tiantian and Gene Mayer both tennis players?
Gene Mayer Gene Mayer (born April 11, 1956) is a former tennis player from the United States who won 14 singles titles during his career.
Zheng Jie Zheng Jie (born 5 July 1983) is a Chinese professional tennis player. Her career-high singles ranking is World No. 15 which she achieved on 18 May 2009.