The Biggest Loser: Anna Kournikova Out

Although the former tennis pro "was not fired," the reality show "wasn't the right fit for her," a source tells PEOPLE

Anna Kournikova is leaving The Biggest Loser after just one season

Anna Kournikova: Biggest Loser's Next Trainer!, Anna Kournikova

Inside reclusive life of 'world's sexiest woman' Anna Kournikova, tennis, Enrique Iglesias

Anna Kournikova International Community - Anna leaves ABC studios after appearing on ''Live With Regis & Kelly'' in NYC. The 30-year-old tennis star and new ''Biggest Loser'' trainer was on to chat

Anna Kournikova Will Replace Jillian Michaels on 'The Biggest Loser' (2011/05/25)- Tickets to Movies in Theaters, Broadway Shows, London Theatre & More

Anna Kournikova

Anna Kournikova Off The Biggest Loser Due to Alleged Diva-Like Behavior - The Hollywood Gossip

Anna Kournikova - Rotten Tomatoes

126 The Biggest Loser Where Are They Now Stock Photos, High-Res Pictures, and Images - Getty Images

Anna Kournikova: 'Marriage Isn't Important to Me

Anna Kournikova is leaving The Biggest Loser after just one season

Anna Kournikova to Exit Biggest Loser After This Season - TV Guide