Anna Kournikova is a former professional tennis player from Russia. She was one of the most high-profile and marketable athletes in the world during her playing career, achieving fame not only for her tennis skills but also for her good looks. Kournikova won two Grand Slam doubles titles, but never won a singles title. She reached the singles semifinals of the Australian Open and Wimbledon in 1997 and 2000 respectively. Kournikova retired from professional tennis in 2003 due to persistent injuries.