Britain's Dwain Chambers (R) compete in the men's 100m heats at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London. AFP PHOTO / JEWEL SAMAD
Britain's Dwain Chambers competes in the men's 100m heats at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London. AFP PHOTO / FRANCK FIFE
Britain's Dwain Chambers competes in the men's 100m heats at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London. AFP PHOTO / ERIC FEFERBERG