First aired September 15, 2009 Before arriving on the Biggest Loser Ranch, the contestants are given a challenge: a footrace along the last mile of the Biggest Loser Marathon from Season 7.The winner would receive immunity for him(her)self and the person s/he would choose as his or her partner.
Back at the ranch, the contestants share their stories before picking teams.
Daniel, winning the race, has first choice of teammates and chooses Shay as his partner, granting her immunity as well for the first week.
And Tracey and Mozziz ("Coach Mo") are hospitalized following the challenge.
Tracey does not return until the second week, but Coach Mo returns mid-way through the first.
At the second weigh-in, Coach Mo represents the Purple Team by himself and is the contestant with the second largest percentage of weight lost.
The Black Team (Alexandra and Julio) fall below the yellow line; after the usual deliberations, the other teams choose to send Alexandra home from the ranch.
He informs 29-year-old Sean that he has type II diabetes.
The contestants then go through two workouts, with both Bob and Jillian working with all contestants, rather than dividing the gym.
Another change to the format this year is that the two trainers will work with all contestants rather than splitting the contestants into two camps and creating an imagined competition between the two trainers.
In the fifth week, when teams are changed to blue and black, Jillian leads black while Bob leads blue.
At the weigh-in, the pink team (Amanda and Rebecca) start poorly, with only 10 pounds lost between them.