The Winning Moment of Season 15 - Onsite Player

The three finalists weigh-in at the live finale, but only one contestant will be crowned The Biggest Loser.

Rachel Wins the Triathlon - Onsite Player

In their last week on the ranch, the contestants participate in their toughest challenge yet: the Biggest Loser Triathlon.

David's Makeover - Onsite Player

The contestants meet with stylists Tim Gunn and Ken Paves to receive a new look for their new selves.

Bob's Olympics Workout - Onsite Player

The contestants head to the Olympic Training Center in Park City, Utah to train with some of the best athletes in the world.

Last Chance - Onsite Player

The eliminated contestants return for a second chance to rejoin the competition, and a brutal sand dune challenge leads to another elimination.

The Red Team Reboots - Onsite Player

The competition moves to singles, and a double red line leads to the elimination of two key players.

The White Team is Evil - Onsite Player

The teams participate in a trivia challenge, and the losing team must work in a diner for the entire week.

Rachel Swims Again - Onsite Player

One team's fate rests on a single contestant sent to work out at home with his trainer.

Thanksgiving on the Ranch - Onsite Player

The contestants compete in a food drive challenge, and the winning team receives a much-needed visit from a family member.

Ruben's Return - Onsite Player

Ruben returns to the ranch; the contestants receive a visit from their former selves, and Bob uses the last trainer save of the season.

Craig vs. Water - Onsite Player

The contestants battle in a tailgate cook-off to create healthy, delicious meals for the Season 14 Biggest Loser kids, and another contestant is eliminated.

There's Somethin' In My Pumpkin - Onsite Player

The contestants must scavenge through a pumpkin patch in search of immunity, but temptations lurk around every corner.

The Mystery Box - Onsite Player

This week, the Biggest Loser contestants are only allowed to use gym equipment they've "purchased" in an auction.

Craig's Challenge - Onsite Player

The contestants compete in their first challenge of the season, and one contestant is sent home after the Week 2 weigh-in.

Choosing Teams - Onsite Player

The new contestants of Season 15 arrive at the ranch for their first week of workouts and weigh-ins.