PHOTOS: Gold medal winners on Day 14 of the London Games

Latvia's Maris Strombergs claimed gold in the BMX men's event at the Olympics.

Australian Sam Willoughby took silver and Colombian Carlos Mario Oquendo Zabala claimed bronze.

- London Olympics 2012 - Complete coverage

Colombia's Mariana Pajon claimed gold in the BMX women's event at the Olympics.

New Zealand's Sarah Walker took silver and Dutchwoman Laura Smulders claimed bronze.

New Zealand's Jo Aleh and Olivia Powrie won the Olympic gold medal in the women's 470 on Friday, the Kiwis' second sailing medal of the London Games.

Aleh and Powrie came into the medals race tied on points with the British crew of Hannah Mills and Saski Clark. The Kiwis won the race while the British finished ninth and took the silver.

It's the first gold medal for the Kiwis in a boat with a rudder since 1984, when Russell Coutts topped the Finn fleet and Rex Sellers and Christopher Timms won the Tornado class. Coutts went on to become the most dominant skipper in America's Cup history.

The Kiwis have been strong in windsurfing in recent Olympics, but until these games, they hadn't won any medals in boats with rudders since 1992.

On Wednesday, the Kiwi 49er skiff crew of Peter Burling and Blair Tuke took silver.

Oussama Mellouli of Tunisia won the gold medal in the men's 10 kilometer open water swim at the London Olympics on Friday.

Germany's Thomas Lurz won the silver medal and Richard Weinberger of Canada the bronze.

Russia's synchronized swimmers swept to gold on Friday with an impeccably executed team routine punctuated by military drumbeats and spectacular acrobatic jumps, marking their fourth consecutive clean sweep at the Games.

China, an emerging force in the sport, pipped Spain to claim silver.

The Russians, who have won every duet and team gold since the Sydney Games, scored 98.93 points out of a possible 100 for their "free" routine, a sequence which is not prescribed and in which swimmers show off their creative and technical skills.

Friday's result was added to their top-scoring routine in the team technical round, taking them to a total of 197.03 points and an Olympic title.

Russia had already won gold in the synchronized swimming duet segment earlier this week.