Anna Sergeyevna Kournikova (Russian: Анна Сергеевна Ку́рникова; born 7 June 1981) is a Russian retired professional tennis player. Her beauty and celebrity status made her one of the best known tennis stars worldwide, despite her never winning a WTA singles title. At the peak of her fame, fans looking for images of Kournikova made her name one of the most common search strings on Google.
Although reaching No. 8 in the world in 2000, she never won a WTA Title in singles. Kournikova’s forte has been doubles, where she has at times been the World No. 1 player. With Martina Hingis as her partner, she won Grand Slam titles in Australia in 1999 and 2002. Based on their looks, Hingis and Kournikova referred to themselves as the “Spice Girls of Tennis”. Kournikova’s professional tennis career has been curtailed, and possibly ended, by serious back and spinal problems in the past several years. She resides in Miami Beach, Florida, and plays in occasional exhibitions and in doubles for the St. Louis Aces of World Team Tennis. She was a new trainer for season 12 of the television show The Biggest Loser, replacing Jillian Michaels, but will not return for season 13.