Argentina's Maria Virginia Zonta serves against the Netherlands' Marleen van Iersel and Sanne Keizer during their women's preliminary round beach volleyball match at Horse Guards Parade during the London 2012 Olympic Games August 2.

Russia's Aliya Mustafina warms up before competing in the balance beam during the women's individual all-around gymnastics final in the North Greenwich Arena during the London 2012 Olympic Games August 2.

Oussama Mellouli of Tunisia competes in the men's 1500m Freestyle Heats during the Swimming competition held at the Aquatics Center during the London 2012 Olympic Games Swimming competition in London, Britain, Aug. 3.

China's Wu Minxia competes in the preliminary round of the women's 3m springboard diving event at the London 2012 Olympic Games in the Aquatics Centre in London on August 3.

Athletes run past Olympic rings on a board as they compete in the men's 1500m round 1 event at the London 2012 Olympic Games at the Olympic Stadium August 3.