The Biggest Loser: Battle of the Ages is the twelfth season of the NBC reality television series entitled The Biggest Loser. The contestants competed to win a $250,000 prize, which was awarded to John Rhode, the contestant with the highest percentage of weight lost. It premiered on September 20, 2011. Along with existing trainer Bob Harper, two new trainers (Anna Kournikova and Dolvett Quince.) joined this season. The 15 contestants this season were divided into three groups of five by their ages: those who are 30 and under were initially trained by Quince, those who are between 31–49 were initially trained by Harper, and those who are 50 and over were initially trained by Kournikova. This season marked the first time since season 5 that America did not have to vote on who would become a finalist. For the first time ever in Biggest Loser history, all 3 finalists were men.
Contestants
The "Total Votes" column indicates the number of votes cast against the contestant when he/she was eliminated. This contestant fell below the Red Line and was eliminated before the finale.
The red team is contestants who are ages 30 and younger (trained by Dolvett Quince), the black team is contestants who are ages 31–49 (trained by Bob Harper), and the blue team is contestants who are ages 50 and older (trained by Anna Kournikova). As of Week 7, two contestants stayed on the same teams, while the remaining seven swapped teams.
Weigh-Ins
Notes
The Black Team is trained by Bob, the Red Team is trained by Dolvett, and the Blue Team is trained by Anna. Sunny's 6.03% weight loss in week 7 was counted as -3.96% due to her weight gain the previous week so Becky's valid -5.42% weight loss made her the biggest loser of the week.
Standings
Week's Biggest Loser (Team or Individuals) Week's Biggest Loser & Immunity Immunity (Challenge or Weigh-In) One of the last two people eliminated before the finale Results from At-Home players
BMI
Underweight (less than 18.5 BMI) Normal (18.5 – 24.9 BMI) Overweight (25 – 29.9 BMI) Obese Class I (30 – 34.9 BMI) Obese Class II (35 – 39.9 BMI) Obese Class III (greater than 40 BMI)
Winners
$250,000 Winner (among the finalists) $100,000 Winner (among the eliminated contestants)
Weigh-In Figures History
Notes
Sunny's 14 lb. weight loss in week 7 was displayed as 9 lbs. due to her weight gain the previous week. Bonnie's 5 lb. weight loss in week 9 was displayed as 4 lbs. due to the one lb. disadvantage. Vinny's 11 lb. weight loss in week 10 was displayed as 14 lbs. due to the three lb. advantage. John's 5 lb. weight loss in week 10 was displayed as 6 lbs. due to the one lb. advantage. Sunny's 5 lb. weight loss in week 10 was displayed as 4 lbs. due to the one lb. disadvantage. John's 9 lb. weight loss in week 11 was displayed as 10 lbs. due to the one lb. advantage.
Weigh-In Percentage History
Notes
Sunny's 6.03% weight loss in week 7 was counted as -3.96% due to her weight gain the previous week. Bonnie's 2.35% weight loss in week 9 was counted as -1.88% due to the one pound disadvantage. John's 1.61% weight loss in week 10 was counted as -1.94% due to the one pound advantage. Vinny's 3.28% weight loss in week 10 was counted as -4.18% due to the three pound advantage. Sunny's 2.42% weight loss in week 10 was counted as -1.93% due to the one pound disadvantage. John's 2.95% weight loss in week 11 was counted as -3.28% due to the one pound advantage.
Elimination Voting History
Immunity
Immunity, vote not revealed
Immunity, was below yellow line or not in elimination, unable to vote
Below yellow line or up for elimination, unable to vote
Below red line, automatically eliminated
Not in elimination, unable to vote
Eliminated or not in house
Valid vote cast
Vote not revealed or unknown
$250,000 winner (among the finalists)