Jacqueline Baldassari

Olympic athletes Maurice Greene, Natalie Coughlin and Danell Leyva help Ramsay lead a 3K race, with the red and blue teams racing to prepare lunch for the runners; communication issues lead to fights during the dinner service.

Twenty aspiring restaurateurs present their signature dishes to Ramsay -- and an audience -- in Las Vegas; while the challenge winners earn a night out on the town, the losers must head back to Los Angeles on a school bus.

The contestants enter an animal pen to determine which type of protein they will cook in the team challenge; during dinner service, the contestants must impress chef Ramsay's family.

Chef Martin Yan judges six Chinese dishes created by the remaining contestants; during dinner service, one team disappoints a VIP guest; a contestant is eliminated.

The chefs create ethnic dishes with select ingredients; a team falls behind before dinner service begins.

The teams must create five steak dishes; a diner finds an unpleasant surprise in her dish during dinner service; the elimination round brings out bad tempers.