The Biggest Loser NBC reveals identities of thirteenth-season 'The Biggest Loser' cast 12/16/2011 NBC has revealed the identities of the 20 contestants who will be competing on the thirteenth season of The Biggest Loser, which will premiere January 3, 2012 at 8PM ET/PT. 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 Anna Kournikova
