of the competition. They also talked about what they would do to the money. On the same night, Bob and Jillian joined in reflecting how the contestants' lives has changed since. The week's challenge was a classic Biggest Loser challenge usually played near the finale. Contestants had to wear on their original weight in the beginning of the challenge. In one hundred step increments, contestants removed the weight lost chronologically. Once five hundred steps were achieved, they had to run a mile until reaching their colored flagpole. The winner was Ada, and she won a one-pound advantage plus a home gym worth $25,000. The contestants had a grueling final last chance workout. This was very important to earn one of the three guaranteed spots for the final four. Contestants were also shown a flashback of their workout nine weeks ago and present. Ada was shown having a breakdown whether her workout was enough to save her a spot. Also, Elizabeth had no idea whether she would be safe from the yellow line like last week, or face the yellow line yet again. On this week's weigh-in, there were many mixed reactions. After Ada pulls off 6 pounds with the pound advantage, she is not sure whether she will fall below either line. Elizabeth loses 4 pounds, which was usual for her each week. She did not feel confident with the weight at the week, but feels accomplished despite that. Frado and Patrick took the top two spots as the only contestants to lose double digits that week. They lost 15 and 12 pounds respectively. Mark loses 7 pounds, which disappoints him due to feeling that he had put in a lot effort, and losing a single digit number rather than double digit. Lastly, Brendan weighs in and loses 5 pounds. This ultimately pushes him below the red line, eliminating him automatically. Frado, Patrick, and Ada secured a spot in the final four, leaving Mark and Elizabeth below the yellow line. At the vote, Mark is eliminated with two votes because of being such a huge threat. Mark has high hopes of being the at-home winner. In his exit update video, it is shown that he has lost over 170 pounds, while his cousin has lost over 100 pounds. In addition, he meets former contestant Sunshine Hampton from Season 9. Week 11 (Semi-Final) First aired December 7, 2010 The remaining four