Are professional tennis players Sun Tiantian and Martin Damm from the same country?
Sun Tiantian Sun Tiantian (; ; born 12 October 1981) is a Chinese former professional tennis player.
Yoo Jin-sun Yoo Jin-sun (born July 12, 1962 in Seocheon, Chungcheongnam-do) is a former tennis player from South Korea, who represented his native country as a qualifier at the 1988 Summer Olympics in Seoul. There he was defeated in the first round by the number twelve seed from Israel, Amos Mansdorf. The right-hander reached his highest singles ATP-ranking on June 13, 1988, when he became the number 194 of the world.