Are Sun Tiantian and Gene Mayer both tennis players?
Sun Tiantian Sun Tiantian (; ; born 12 October 1981) is a Chinese former professional tennis player.
Yi Chu-huan Yi Chu-huan (; born 31 August 1987) is a Taiwanese tennis player playing on the ATP Challenger Tour. On 11 January 2011, he reached his highest ATP singles ranking of 389 and his highest doubles ranking of 176 achieved on 9 July 2012.