Gold medalists China's Zhang Nan (L) and Zhao Yunlei pose during the victory ceremony for the badminton mixed doubles at the London 2012 Olympic Games Friday. — Reuters LONDON – Records tumbled again as Britain humbled its rivals with poster girl Victoria Pendleton capping another remarkable track cycling day for the hosts at the London Olympics in a simmering velodrome on Friday. Britain won the two gold medals on offer as the men retained their team pursuit title in world record time before Pendleton gave her rivals no chance in the adrenaline-filled keirin. Four years ago, Britain had claimed seven out of the 10 possible titles. Australia and New Zealand took silver and bronze respectively. Pendleton resisted the late challenge of China's Guo Shuang for gold. Hong Kong's Lee Wai Sze took the bronze. Badminton gold for China China won the opening badminton title of the Games as Zhang Nan and Zhao Yunlei became the first boyfriend and girlfriend duo to win Olympic gold medals together. Zhang and Zhao, who also won the world mixed doubles title in the same Wembley Arena venue a year ago, took the Olympic gold medal with a 21-11, 21-17 win over their second-seeded compatriots Xu Chen and Ma Jin. S. Korea takes archery gold Oh Jin-hyek won South Korea's first men's Olympic individual archery gold medal after beating Takaharu Furukawa of Japan in the final. Dai beat Rick van der Ven of the Netherlands to win the bronze, earning China its first men's individual medal. Oh's win brought to an end South Korea's long wait for the individual title. On the day of the judo heavyweight Olympic competition France's Teddy Riner won the men's 100-kg plus judo gold medal, giving him the only medal he was missing. Riner, 23, defeated Russia's Alexander Mikhaylin. The bronze medals were won by Germany's Andreas Toelzer and Brazil's Rafael Silva. In the women's division, Idalys Ortiz of Cuba won the women's over 78-kg gold, improving on the bronze she won at the Beijing Games. Ortiz defeated Japan's Mika Sugimoto. The bronze medals went to Britain's Karina Bryant and China's Tong Wen. China bags trampoline China's Dong Dong has been keeping a journal of his London Olympic experiences and after he won gold in the men's trampoline event of the gymnastics program. He scored 62.990 points to clinch gold ahead of Russia's Dmitry Ushakov and his Chinese compatriot Lu Chunlong, the Beijing champion. Kazakhstan wrests w-lifting gold Svetlana Podobedova won Kazakhstan's third weightlifting gold medal, beating Russia's Natalya Zabolotnaya in a dramatic 75-kg showdown. Shooting gold for Cuba Leuris Pupo hailed his men's 25 meter rapid fire pistol success as a victory for all of Cuba as he claimed the country's first Olympic gold medal in the sport with a record-equalling total. The 35-year-old hit 34 of the 40 targets to finish ahead of Vijay Kumar of India in second with 30 in a surprising one-two that made a mockery of the world rankings. Feng Ding of China was third on 27 before being eliminated after 35 shots. — Agencies