The cast was announced on December 1 and includes Survivor: Borneo winner Richard Hatch[1] and The Voice season two semi-finalist Erin Willett.
For the first official challenge of Season 17, each team picks has to put sacks of money onto a scale which will lower a ladder in downtown Los Angeles.
In the first challenge, the players must rely on their newfound nutritional knowledge to answer trivia questions about some of their favorite dishes.
Back at the ranch, since Team Dolvett won the challenge, they decide to make Colby sit out the first weigh-in.
Team Jen finally conquers their first challenge, winning a healthy cooking lesson with celebrity chef Lorena Garcia.
First aired January 18, 2016 In the first challenge, the teams must relay a correct combination of 14 colors to each other in a digital distraction-filled game of telephone.
Team Dolvett wins and chooses one week of exclusive gym use over unrestricted access to the Internet and telephone, which means they won't be able to talk to their families.
First aired January 18, 2016 Bob drops a surprising bomb on the players, telling them they'll be changing teams.
In the next challenge, the teams must climb platforms to retrieve 15-pound puzzle pieces and place them correctly on the board.
The teams go head-to-head in the Last-Chance Challenge - a relay race on the treadmill, bike and Jacob's Ladder.
The players are given 500 Biggest Loser bucks to spend on bidding in a luxury item auction, and Colby blows all $500 on a mystery box.
Everyone is stunned when the mystery box reveals an immunity prize, saving Colby from elimination this week.
First aired January 25, 2016 In the next challenge, the teams pull a boat to shore and row to the finish line.
Team Dolvett wins and is thrilled with the prize - a relaxing day on a private yacht, reading letters from home.
One player from each team returns home, and their weight loss will be the only number that counts toward a win on the scales.
First aired February 1, 2016 Bob announces the players are now on their own, splitting from their teams and wearing individual jerseys.
Everyone shows up for their first individual workout with Jen except two players, Colby and Jacky, who go wine tasting.
The next morning, the boys and Erin show up for a workout with Dolvett, while the rest of the ladies go parasailing.
First aired February 8, 2016 The highly anticipated makeover week begins, and the seven remaining contestants are eager to experience their transformations and reveal their new looks to their loved ones, who've been flown in from all around the country.
First, longstanding "Project Runway" mentor and "The Biggest Loser" makeover mainstay Tim Gunn gives each player a wardrobe renovation, carefully choosing outfits that highlight each contestant's incredible progress.
Next, Hollywood mane master Ken Paves completes the makeovers with showstopping new hairstyles, including an update to Colby's beard.
Then Bob reveals that the family members will be sticking around for a little while longer - they'll be competing alongside the contestants in the next challenge!
Each contestant picks a family member to help them in a relay, in which they run back and forth to load weights on a sled and eventually pull it through the finish line.
At the weigh-in, Erin gives the one-pound disadvantage to Roberto, but he stays above the yellow line with a 10-pound loss.
Dr. Huizenga gives the players an update on their health, showing them the astonishing accomplishments they've made in the last 12 weeks.
At the Last-Chance Workout, the players kick it into high gear, pushing themselves to shed a few more pounds for the last weigh-in before the finale.
Before the finalists find out who will be declared the Biggest Loser and take home the $250,000 prize, they face one final temptation - $50,000.
With a total weight loss of 160 pounds, Roberto is Season 17's Biggest Loser, taking home $250,000.