The Biggest Loser S17E04 - Ready? Set. Auction!; Ship Shape

The contestants face a luxury auction where they bid on flashy or functional items they can use during the week, where one of the items include a one-on-one workout with Bob. The contestants are back on the beach where they work as a team for a chance to win letters from home and spending the day on a yacht. Following each competition, a contestant is sent home.