Armstrong wins final race
Kristin Armstrong, centre, won a second successive gold in the women's time trial
Kristin Armstrong announced her retirement after successfully defending her Olympic cycling time-trial title at Hampton Court.
The 38-year-old from the United States finished the 29-kilometre route in 37 minutes 34 seconds to win a second successive gold in the discipline after a triumphant race against the clock in Beijing in 2008.
Armstrong was last of the 24 riders to roll down the start ramp and led at every time check, with world champion Judith Arndt of Germany second in 37mins 50secs and Russia's Olga Zabelinskaya, who finished third in Sunday's road race, taking bronze in 37:57.
Germany battled back to clinch gold in the men's eight rowing as Canada emerged second with Great Britain claiming bronze, while Ukraine won the women's quadruple sculls from Germany and the Unisted States.
Italy's Daniele Molmenti won gold in the kayak slalom, while China's Qin Kai and Luo Yutong took gold in the men's three-metre springboard synchronised. That was China's fourth gold from four events in the diving competition.
Li Xiaoxia won gold in the women's table tennis singles after beating Chinese compatriot Ding Ning 4-1, while Kim Jangmi of South Korea took gold in the women's 25m air pistol. Meanwhile, Lu Xiaojun won the men's 77kg weightlifting at ExCeL and Jiao Liuyang won gold in the women's 200m butterfly to clinch another couple of medals for China.
There was gold medal glory for Venezuela when Ruben Limardo won the fencing individual epee at the ExCeL arena, beating Norway's Bartosz Piasecki 15-10 to secure only the country's second Olympic gold in its history. South Korea's Kim Jiyeon won gold in the women's individual sabre.
At the Aquatic Centre, Nathan Adrian destroyed James Magnussen's ambition of adding the Olympic title to his world crown when the American out-touched him by one hundredth of a second in the 100 metres freestyle, taking the title in 47.52 seconds.
American swimmer Rebecca Soni set a new world record of two minutes 20.00 seconds in the semi-finals of the 200 metres breaststroke, while the United States won the gold medal in the women's 4x200m freestyle relay.
In the final action of the evening in the pool, a United States team consisting of Missy Franklin, Dana Vollmer, Shannon Vreeland and Allison Schmitt won the gold medal and broke an Olympic record in the women's 4x200m freestyle relay.