Which tennis player is younger, Sun Tiantian or Anna Kournikova?
Sun Tiantian: Sun Tiantian (; ; born 12 October 1981) is a Chinese former professional tennis player. Anna Kournikova: Anna Sergeyevna Kournikova (Russian: А́нна Серге́евна Ку́рникова ; ] ; born 7 June 1981) is a Russian former professional tennis player.
Sun Tiantian