Ana Alvarado, a 50-year-old USPS letter carrier from Portland, OR, became the first contestant eliminated from the fourth edition of The Biggest Loser: Couples during Tuesday night's premiere of the NBC reality weight-loss series' eleventh season.

"I'm so proud of you Irene, you know that. I love you with all my heart -- all my heart and all my breath -- I promise that I'm going to go home and take care of myself and seek help and support because I do want to be healthy," Ana told her daughter and teammate Irene Alvarado following her ouster.

The Biggest Loser: Couples' season premiere began with all 11 teams stepping on the scale for their initial weigh-ins at The Biggest Loser ranch.

Orange Team member Ana weighed in at 255 pounds, while Irene, a 26-year-old student also from Portland, OR, weighed in at 255 pounds as well. Their total weight as a team was 510 pounds. 

Brown Team members Austin Andrews, a 21-year-old radio board operator, and his father Ken Andrews, a 49-year-old pastor -- both from Pasadena, CA -- weighed in at 396 and 377 pounds respectively for a combined weight of 773 pounds. 

Aqua Team member Courtney Crozier, a 22-year-old student and restaurant manager from Valparaiso, IN, weighed in at 323 pounds, while her mother Marci Crozier, a 49-year-old health club manager and restaurant owner also from Valparaiso, IN, weighed in at 238 pounds for a combined weight of 561 pounds.

Husband and wife Jaquin "Q" Allen, a 27-year-old patient services representative, and Larialmy Allen, a 26-year-old student services program coordinator from Columbia, SC, weighed a total of 738 pounds together as the Red Team.

Pink Team member Sarah Nitta, a 27-year-old college admissions counselor from Las Vegas, NV, weighed in at 261 pounds, while her mother Denise "Deni" Hill, a 59-year-old administrative assistant from Bountiful, UT, weighed in at 256 pounds for a total of 517 pounds.

The Blue Team -- comprised of Jesse Wornum, a 61-year-old insurance agent, and his son Arthur Wornum, a 34-year-old stay-at-home-dad and day care provider from Portland, OR -- weighed a total of 800 pounds together. Arthur weighed in at 507 pounds and was, based on his relatively short stature, deemed to effectively be the heaviest contestant ever compete on The Biggest Loser. Meanwhile, Jesse weighed in at 293 pounds.

Green Team member Jennifer Jacobs, a 28-year-old digital media entrepreneur from Long Branch, NJ, weighed in at 278 pounds, while her father Jay Jacobs, a 53-year-old entrepreneur from West Orange, NJ, weighed in at 400 pounds. Their total weight as a team was 678 pounds.

Purple Team members Olivia Ward, a 35-year-old opera singer and plastic surgery office manager from New York, NY, and her sister Hannah Curlee, a 32-year-old human resources representative from Nashville, TN, weighed in at 261 and 263 pounds respectively for a combined weight of 509 pounds.

The father and daughter pair Moses Kinikini, a 47-year-old garage door installer, and Kaylee Kinikini, a 20-year-old student -- both from Shelley, ID --  weighed a total of 673 pounds together as the Gray Team. Moses weighed in at 440 pounds, while Kaylee weighed in at 233 pounds.

Black Team member Jennifer Jacobs, a 28-year-old digital media entrepreneur from Long Branch, NJ, weighed in at 278 pounds, while her father Jay Jacobs, a 53-year-old entrepreneur from West Orange, NJ, weighed in at 400 pounds. Their total weight as a team was 678 pounds.
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Twin brothers and Black Team members Dan Evans, a 54-year-old police captain, and Don Evans, a 54-year-old police lieutenant -- both from Oklahoma City, OK --  weighed in at 287 and 309 respectively for a combined weight of 596 pounds.

Yellow Team member Justin Pope, a 39-year-old business owner, city worker and bounty hunter from Logan, UT, weighed in at 365 pounds, while his friend Rulon Gardner, a 39-year-old gym owner and motivational speaker also from Bountiful, UT, weighed in at 474 pounds for a total of 839 pounds -- the most combined weight of all the eleventh-season pairs. 

The Biggest Loser host Alison Sweeney then revealed a surprise in the way the game would be played. Five teams would be training with two new unknown trainers at a "secret" location, while six teams would be working out with regular trainers Bob Harper and Jillian Michaels at the ranch. Their first challenge would determine who their trainers would be. 

The challenge required each team to take turns running a total of 5K on manual treadmills, in which the order they finished would determine the order they would be allowed to pick their trainers. The teams to select the new trainers would receive four weeks of immunity, while the teams who opted to train with Bob and Jillian would risk going home after only one week.

The competition commenced and the Yellow Team members Justin and Rulon finished the race first, winning the ability to choose first which trainers they preferred to work with. They were then followed by the Gray Team members Moses and Kaylee, Aqua Team members Courtney and Marci, Green Team members Jennifer and Jay, Brown Team members Austin and Ken, Purple Team members Olivia and Hannah, Pink Team members Sarah and Deni, Red Team members Larialmy and Jaquin, Orange Team members Ana and Irene, Blue Team members Jesse and Arthur, and finally Black Team members Dan and Don.

Justin and Rulon, Moses and Kaylee, Austin and Ken, Sarah and Deni, and Larialmy and Jaquin all chose to train with the unknown trainers, while Courtney and Marci, Jennifer And Jay and Olivia and Hannah opted to work with Bob and Jillian.

Ana and Irene, Jesse and Arthur and Dan and Don were the last three teams to finish the race -- which left them with Bob and Jillian by default, as they were not given the opportunity to choose their trainers.

The teams then went with their selected or given trainers back to the ranch or to the undisclosed location to embark on their difficult first day workouts.

Later on, The Biggest Loser: Couples' first weigh-in then commenced with the six teams that had trained with Bob and Jillian. Alison explained that the team with the lowest weight-loss percentage would fall below the yellow line, and one member would subsequently be eliminated based on votes cast by the other contestants -- who would vote as teams and not individuals.

The five teams who trained with the two unknown trainers were safe from elimination as they received the four weeks of immunity, and therefore, their weight loss was irrelevant and they were not present at the weigh-in. However, Alison revealed that Rulon and Justin set the bar after they lost the most weight out of the five teams who worked out at the secret location.

Rulon dropped to 442 pounds after losing 32 pounds, while Justin lost 27 pounds and ended the week weighing 338 pounds. They lost a combined 59 pounds.

In addition, Moses set a record for the most weight-loss in one week ever on The Biggest Loser. He lost a total of 41 pounds, dropping to 399 pounds.

The six teams that trained with Bob and Jillian then stepped on the scale for their first elimination weigh-in.

Courtney dropped to 308 pounds after she lost 15 pounds, while Marci dropped to 224 pounds after shedding 14 pounds for a combined weight-loss of 29 pounds and a 5.17% weight-loss percentage.

Arthur shed 31 pounds and dropped to 476 pounds, while Jesse fell to 286 pounds after he lost seven pounds. They posted a combined weight loss percentage of 4.75% and dropped 38 pounds total as a team.

Jennifer and Jay lost a total of 46 pounds together, as Jennifer fell to 258 pounds after losing 20 and Jay dropped to 374 pounds following his 26-pound loss. They posted a 6.78% weight-loss percentage for the first week.

Olivia and Hannah both lost 16 pounds each, putting their combined total up to 32 pounds and posting a 6.29% weight-loss percentage. Olivia fell to the weight of 245, while Hannah dropped to 232.

Ana and Irene posted a low weight-loss percentage compared to the other teams with a total of 4.31%. Irene lost 13 pounds and dropped to 242 pounds, while Ana only fell to a weight of 246 after she shed nine pounds, for a combined total of 22 pounds.

Don lost 21 pounds and dropped to 288, while Dan lost 19 pounds and fell to 268. The team lost of total of 40 pounds and posted a 6.71% weight-loss percentage.

The Orange team members Ana and her daughter Irene fell below the yellow line and were up for elimination.

The six teams then arrived for the first elimination ceremony. The Purple Team voted to oust Irene, however the Aqua, Orange, and Blue teams all voted for Ana -- who was eliminated from the competition.

In a post-elimination update, Ana revealed she currently weighed 205 pounds and lost a total of 50 pounds. She said her weight-loss has made her job physically easier and was inspired to go out and start dating again. Ana also claimed her transformation was for her daughter Irene in effort to honor her promise to her on the ranch.  

"I'm doing it for Irene. I promised her that and I want to live a long life because I can see her grow up and get married, and I don't want my daughter to be alone. The Biggest Loser has given me the chance and encouragement and the motivation to take control and charge of my life so that I can actually start living it and enjoy my life," Ana explained.

The Biggest Loser: Couples' next episode will air Tuesday, January 11 at 8PM ET/PT on NBC.