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 On And Now Off “The Biggest Loser”

Anna Kournikova

Anna Kournikova Biggest Loser 052311 14.JPG Orig Pix Taken 2005 in Florida - EXCLUSIVE COVERAGE MIAMI BEACH, FL - MAY 23: (Radar) It looks like 'The Biggest Loser' might have found another

Anna Kournikova Scores Gig on 'Biggest Loser

Anna Kournikova Explains her Biggest Loser Exit with “TV Isn't for Me”

The Biggest Loser: The Workout - Calorie Knockout : Bob Harper, Anna Kournikova, Dolvett Quince, Cal Pozo: Movies & TV

The Biggest Loser: The Workout - Calorie Knockout

The Biggest Loser' changes: New trainer, Dolvett Quince, joins Bob Harper and Anna Kournikova

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

It's No Secret Why Anna Kournikova Was Forced Out Of The Biggest Loser

Anna Kournikova to join 'The Biggest Loser' as a trainer: Tennis pro replaces Jillian Michaels – New York Daily News

Kournikova opens up about career-ruining back injury - Rediff.com

Anna Kournikova at The Biggest Loser (S12E02)

Anna Kournikova