The Biggest Loser Anna Kournikova in, Cara Castronuova and Brett Hoebel out on 'Loser' 05/25/2011 Anna Kournikova will be replacing not one but three trainers on The Biggest Loser's next season, barring any other new additions. Read More RELATED NEWS NBC reveals identities of thirteenth-season 'The Biggest Loser' cast'The Biggest Loser' crowns John Rhode twelfth-season champion'The Biggest Loser' reveals finale finalists, cuts Vinny and Becky TAGS: The Biggest Loser Bob Harper Jillian Michaels Alison Sweeney Anna Kournikova Loser
