The ninth season of ` ` The Big Loser '' features its heaviest competition yet . Mom Patti Anderson , 55 , a business owner , and daughter Stephanie Anderson , 29 , a radio sales executive , from Lafayette and West Hollywood , California . A 30-year - old man from Chicago , Illinois is the heaviest competitor ever at 526 lbs . The first episode of the new series aired September 11 .
The ninth season of ` ` The Big Loser '' features its heaviest competition yet . A 30-year - old man from Chicago , Illinois is the heaviest competitor ever at 526 lbs . The first episode of the new series aired September 11 .