United States' gold medal winner Michael Phelps, center, is flanked by South Korea's silver medalist Park Tae-hwan, left, and United States' bronze medal winner Peter Vanderkaay at the medal ceremony of the men's 200-meter freestyle final during the swimming competitions in the National Aquatics Center. (AP)
From left, United States' Margaret Hoelzer, bronze, her teammate gold medal winner Natalie Coughlin and Zimbabwe's Kirsty Coventry, silver, show their medal after the women's 100-meter backstroke final during the swimming competitions in the National Aquatics Center. (AP)
United States' Kerri Walsh, left, celebrates with teammate Misty May-Treanor during a beach volleyball match against Cuba's Tamara Larrea and Dalixia Fernandez at the Chaoyang Park Beach Volleyball Ground at the Beijing 2008 Olympics in Beijing. USA won 21-15, 21-16. (AP)
Argentina's Agustina Garcia celebrates her goal with her teammates during their women field hockey match against Great Britain at the Beijing 2008 Olympics. (AP)
South Korea's Park Tae-hwan waves as he gets the silver medal in the medal ceremony of the men's 200-meter freestyle final during the swimming competitions in the National Aquatics Center at the Beijing 2008 Olympics in Beijing. (AP)
U.S. gymnast Jonathan Horton celebrates after performing at the horizontal bar during the men's team final at the Beijing 2008 Olympics in Beijing. (AP)
Aaron Peirsol of the United States, second left, shows his gold medal with silver winner Matt Grevers of the United States, left, and bronze winners, Hayden Stoeckel of Australia and Arkady Vyatchanin of Russia during an awarding ceremony of the men's 100-meter backstroke final in the National Aquatics Center. (AP)
Hungary's Tamas Decsi, left, and his compatriot Aron Szilagyi compete in their men's individual saber event of fencing at the Beijing 2008 Olympics in Beijing. (AP)
US tennis player Serena Williams returns the ball against Olga Govortsova of Belarus during a first round match of the 2008 Beijing Olympic Games tennis tournament, at the Olympic Green Tennis Centre in Beijing. (AFP)
Gold medalist Leisel Jones of Australia, center, silver winner Rebecca Soni of the United States, left, and bronze winner Mirna Jukic of Austria display their medals during an awarding ceremony of the women's 100-meter butterfly in the National Aquatics Center. (AP)
Jitender Kumar of India reacts after defeating Furkan Ulas Memis of Turkey after a men's flyweight 51 kilogram preliminary boxing match at the Beijing 2008 Olympics in Beijing (AP)
Venus Williams, of the United States, returns a shot against Iveta Benesova, of the Czech Repubic, during the first round of the women's singles tennis of the Beijing 2008 Olympics (AP)
From left, silver medalist Irina Nekrassova from Kazakhstan, gold medalist Pak Hyon Suk from North Korea and bronze medalist Lu Ying-Chi from Taiwan stand with their medals in the women's 63kg weightlifting competition at the 2008 Olympics in Beijing. (AP)
Wang Xin, left, and Chen Ruolin of China wear their gold medals won in the womens synchronized 10 meter platform diving at the 2008 Beijing Olympics in Beijing. (AP)
China's gymnasts Zou Kai, Yang Wei, Xiao Qin, Li Xiaopeng, Huang Xu and Chen Yibing, from left, pose with their medals after winning gold in the men's team final at the Beijing 2008 Olympics in Beijing. (AP)