The Biggest Loser 'The Biggest Loser' contestant Ruben Studdard opens up about competing on the show 10/15/2013 The Biggest Loser's fifteenth season premieres Tuesday night with a one-hour episode at 8PM ET/PT on NBC. Read More RELATED NEWS Jillian Michaels' partner Heidi Rhoades files to end their domestic partnershipRachel Frederickson: The "controversial storm" after I won 'The Biggest Loser' was hurtful and I had low self-esteemJillian Michaels says she didn't quit 'The Biggest Loser' TAGS: American Idol The Biggest Loser Bob Harper Jillian Michaels Ruben Studdard David Foster