Anna Sergeyevna Kournikova, now 31 years old, was once upon a time the pin-up girl of world tennis.Kournikova and Martina Hingis, who ofted paired to win doubles titles, were named the Spice Girls of tennis.
She was a new trainer for season 12 of the television show The Biggest Loser, replacing Jillian Michaels, but did not return for season 13.