Leg #4: From Petrohue, Chile to Ushuaia, Argentina

Episode Title: No Babies on the Race!

Episode Recap: After three consecutive first place finishes, newlyweds Rob & Amber ran a sloppy leg and struggled to overcome critical mistakes that resulted in a showdown against cousins Charla & Mirna, a Team to whom they lied and from whom they stole a taxi. In the end, the cousins prevailed as a stunned Rob & Amber became the fourth Team eliminated from the race. Full details.

Video Clips from the Episode: Charla & Mirna converse with Rob & Amber Oswald & Danny on Charla & Mirna Bill raps while Mirna loses it Eric on Danielle's fashion choice See all Episode 4 videos at CBS.com

Detour: Navigate It: In Navigate It, Teams had to use a map of Punta Arenas to get to the town plaza where a sailor would hand them a compass. Then, using the compass, the Teams needed to walk directly south to find the Nautilus Building, a deep-sea salvage business. Rob & Amber, Joe & Bill, Oswald & Danny, Teri & Ian, Eric & Danielle, Dustin & Kandice and Charla & Mirna navigated this Detour masterfully. Sign It: In Sign It, Teams had to choose a pole and building supplies and carry them up a flight of stairs to Magellan's Map. Using the map as a reference, Teams needed to figure out his journey around the world began and ended in Seville. Then, they had to build a traditional local signpost listing in order the fourteen ports of call in his voyage. While the signs didn't have to point in the right direction, all the cities had to be spelled correctly. Uchenna & Joyce were the only Team to sign their names on this Detour.

Roadblock: In this Roadblock, one Team member had to sort through a full mail bag of 1600 envelopes to find one of two letters addressed to their Teams. What Teams did not know was that a Team from their first season on the race wrote the letter. Once they found the letter, they had to read it out loud to their teammate to receive their next clue. Oswald, Eric, Teri, Kandice, Bill, Joyce, Rob and Mirna performed the Roadblock.

Best use of strategy: I'd say that this award should go to a team not even racing...Susan and Patrick. Did you see how long that letter was to Romber? It probably took them 10 minutes to get through it! And the letter was pretty accurate. Romber hardly even knew the team that fiercly hated them. Helpers: Uchenna and Joyce helping Charla onto the mat, and Rob trying to help the Beauty Queens but actually screwing them and himself. Schemers: AMBER! She tries to screw Charla and Mirna over on several occasions then lies about it. Very entertaining. Rob and Amber threw off Charla & Mirna at the Playa Larga stop by faking that they found the clue in the woods. Then, they totally lied to them again when confronted by the Charla & Mirna. Biggest comeback: Charla & Mirna are blessed by incredible luck and find their letter before Rob and Amber. Team to watch next week: Oswald & Danny, Eric & Danielle, Charla & Mirna.

Mini-Scorecard Fast-forward:None Intersection: None

Yield:None Winning1st team:Place: Oswald & Danny Eliminated: Rob & Amber

placement of teams in the order:
#1- Oswald and Danny (Prize: Trip for two to Maui, Courtesy Travelocity)
#2- Eric and Danielle
#3-Teri and Ian
#4- Joe and Bill
#5- Dustin and Kandice
#6- Uchenna and Joyce
#7- Charla and Mirna
#8- Rob and Amber (eliminated- drop from first to last)