Olympics: Gold medals on day nine

US swimmer Michael Phelps competes during the men's 4x100m medley relay swimming final at the National Aquatics Center. Michael Phelps became the first man to win eight gold medals at the same Olympics when the US won the men's 4x100m medley relay final in a new world record time Photograph: Francois-Xavier Marit/AFP

China's Zou Kai puts in a gold-medal-winning performance during the apparatus finals Photograph: Rob Carr/AP

A swimming supporter congratulates Netherlands' Marit van Eupen (left) and Kirsten van der Kolk after the pair won gold in the lightweight women's double sculls final at the Shunyi Olympic Rowing Park Photograph: Jens Buettner/EPA

Elena Dementieva from Russia celebrates after winning the gold in the women's singles tennis final against Dinara Safina. Dementieva beat her compatriot 3-6, 7-5, 6-3 Photograph: Philippe Huguen/AFP

Members of the US rowing team pose after winning gold in the women's eight Photograph: Aly Song/Reuters

The Australian women's 4x100m medley relay team of (right to left) Emily Seebohm, Leisel Jones and Jessicah Schipper, holding hands with final leg swimmer Lisbeth Trickett, celebrate their gold medal win Photograph: Daniel Dal Zennaro/EPA

Kaori Icho of Japan (left) competes against Alena Kartashova of Russia in the women's freestyle 63kg gold medal bout. Icho was victor Photograph: Phil Walter/Getty

British Finn sailor Ben Ainslie celebrates after taking gold in 30-knot winds, rain and poor visibility in Qingdao Photograph: Olivier Hoslet/EPA

France's Nicolas Lopez (left) and USA's James Williams compete during the men's team sabre gold medal match Photograph: Philippe Desmazes/AFP

Oussama Mellouli of Tunisia en route to winning the gold in the men's 1500m freestyle final Photograph: Adam Pretty/Getty

North Korea's Un Jong-hong competes in the women's vault final of the artistic gymnastics event. Un won the gold, Germany's Oksana Aleksandrovna Chusovitina the silver and China's Fei Cheng the bronze Photograph: Lluis Gene/AFP

Rafael Nadal of Spain plays against Fernando Gonzalez of Chile in their men's singles gold medal final tennis match. Nadal took gold with a 3-0 victory Photograph: Joe Klamar/AFP

Canada's Kevin Light, Ben Rutledge, Jake Wetzel, Malcolm Howard, Dominic Seiterle, Adam Kreek, Kyle Hamilton and Brian Price celebrate after winning the men's eight final at the Shunyi Rowing and Canoeing Park. Britain' closest to the camera, took silver Photograph: Mustafa Ozer/AFP