Aniuyguyna Sergeevna Kournikova (born June 7, 1981, in Moscow, Russia, then USSR) (Russian: Анна Сергеевна Курникова) is a Russian model and retired professional tennis player. She won two Grand Slam doubles tournaments, both with Swiss player Martina Hingis. In 1999, the Women's Tennis Association (WTA) said she was the best doubles player in the world. She also played tennis for Russia in an international competition called the Fed Cup.