Germany's gymnast Marcel Nguyen competes on the rings during the men's qualification of the artistic gymnastics event of the London Olympic Games on July 28, 2012 at the 02 North Greenwich Arena in London. AFP PHOTO / THOMAS COEX
In a picture taken through a glass window US swimmer Michael Phelps competes in the men's 400m individual medley final swimming event at the London 2012 Olympic Games on July 28, 2012 in London. AFP PHOTO / GABRIEL BOUYS
Russia's gymnast David Belyavskiy competes on the floor during the men's qualification of the artistic gymnastics event of the London Olympic Games on July 28, 2012 at the 02 North Greenwich Arena in London. AFP PHOTO / THOMAS COEX